1. Why Porsche Owners Benefit from Permanent Ceramic Protection

Porsche ownership is unique in the automotive world. The brand has built its reputation on a particular kind of long-term relationship between owner and machine - one where the car is treated as a long-term investment, a daily-driveable thoroughbred, or in many cases a generational asset to be preserved and passed down. The Porsche community spans multiple distinct demographics, but they share one thing: a commitment to engine longevity that aligns directly with Cerma's value proposition.

Consider the Porsche ownership horizons:

• Air-cooled 911 owners (1965-1998 - the 911, 930 Turbo, 964, 993) maintain their cars for 30-40+ years. Original-owner air-cooled 911s are not unusual, and many are now passed to second or third generations of family ownership.
• Modern 911 owners typically keep their cars 5-10+ years (much longer than the typical luxury vehicle lease cycle), and used Porsches hold value better than virtually any other manufacturer. A 2018 911 Carrera S still commands $90,000+ in 2026.
• GT car owners (GT3, GT3 RS, GT4 RS, Spyder RS) treat their cars as collector investments, often appreciating in value. A 991 GT3 RS now commands $200,000-$300,000+ depending on condition and miles.
• Cayenne and Panamera owners often keep their vehicles 8-12+ years as the daily-driver companion to their 911 or as standalone luxury vehicles for which engine longevity matters significantly.
• Track-day enthusiasts push their Porsches to the limits the engineering supports, with regular HPDE events at major tracks across the US. Track use accelerates wear at every contact surface, making permanent friction protection particularly valuable.

That ownership philosophy aligns directly with Cerma's value proposition: a one-time investment that protects the engine permanently. The same Porsche owner who pays $300+ for an oil change at the dealer or who invests $1,500-$3,000 in an IMS Retrofit understands engine maintenance as an investment. Cerma fits naturally into that mindset.

Porsche vehicles also have specific engineering characteristics that make Cerma especially relevant:

• The flat-six engine architecture is unique to Porsche. The horizontally-opposed flat-six creates a different oil flow pattern than V-configuration or inline engines. Cerma's bonded ceramic protection works at every wear surface regardless of engine architecture.
• Modern Porsches are predominantly turbocharged. Even the "Carrera" base model uses twin turbocharging since the 991.2 generation. The new 2026 Turbo S T-Hybrid uses two electrically-driven turbochargers (eTurbos) plus an electric motor in the PDK transmission. Turbo bearings at 50,000-200,000+ RPM are exactly the wear surface Cerma's bonded ceramic protects best.
• GT cars use race-quality engines. The 4.0L NA flat-six in the GT3, GT3 RS, GT3 Touring, GT4 RS, and Spyder RS revs to 9,000 RPM with forged internals, oil-jet piston cooling, dry sump lubrication, and a long list of motorsport-derived components. These engines benefit substantially from permanent friction reduction.
• Track use is common in the Porsche community. PCA (Porsche Club of America) HPDE events, time trials, club racing, and casual track days are part of how many Porsche owners use their cars. Track use accelerates wear at every contact surface.
• Service intervals are long. Modern Porsches have 10,000-mile oil change intervals. Cerma's bonded ceramic stays in place across those extended intervals - the protection doesn't degrade based on how long the oil itself runs.

Cerma STM-3 is fundamentally different from any oil or additive. The active ingredient is Nano Silicon Carbide (SiC) - actual ceramic particles that bond mechanically to engine metal surfaces over the first 3,000 to 5,000 miles of driving. Once bonded, the ceramic creates a sacrificial wear layer between metal-on-metal contact points. Friction drops by up to 90 percent. Wear slows dramatically. And because the bond is mechanical, the ceramic survives every oil change.

For more on the underlying chemistry, see our complete guide to Nano Silicon Carbide. To understand the EPA ETV certification that backs Cerma's performance claims, see our guide to EPA Environmental Technology Verification.

2. Which Cerma Product for Your Porsche Engine

Whether you're treating a 2026 911 Turbo S T-Hybrid or a 2003 Boxster S, the Cerma application is the same: 2oz gas treatment ($105.60), one bottle, one-time application.

Current 2026 Porsche gas engines:

Historical Porsche engines (still on the road):

3. Special Note: The Modern 992.2 Flat-Six and T-Hybrid System

The 992.2 generation 911 (current production, 2024+) represents one of the most significant evolutionary steps in 911 history. The 2026 model year specifically introduces the T-Hybrid system to the 911 GTS and the new 911 Turbo S, marking the first hybridization of the iconic sports car.

The 9A2 3.0L Twin-Turbo Flat-Six (Carrera/Carrera S/4S/T)

The base 9A2 engine in the 992.2 Carrera, Carrera S, Carrera 4S, Carrera T, and Targa 4 produces 388-473 hp from 3.0 liters with twin turbocharging. Engineering features include:

• Direct fuel injection (DFI) for precise fuel metering and combustion cooling
• Twin parallel turbochargers (one per cylinder bank) with VarioCam Plus on the intake camshafts
• Plasma-coated cylinder walls for friction reduction and durability - similar to the GT-R's coating system
• Forged crankshaft with optimized counterweighting
• Closed-deck cylinder block design for additional rigidity at high boost
• Wet-sump lubrication with active oil management
• 8-speed PDK dual-clutch transmission standard, 7-speed manual optional on Carrera T

The 9A2 3.6L T-Hybrid (GTS and Turbo S)

The 2026 911 GTS T-Hybrid and Turbo S T-Hybrid mark the first hybridization of the iconic sports car. The system uses:

• 3.6L flat-six (single turbo on GTS, twin eTurbos on Turbo S) - larger displacement than the 3.0L base, derived from the 991.2 Turbo's 3.8L block
• 400V mild-hybrid system with 1.9 kWh battery (significantly smaller than full-EV batteries - the system prioritizes performance over range)
• Electric motor integrated into the PDK transmission - provides torque fill, regenerative braking, and the ability to spin the engine for cold starts
• Electrically-driven turbochargers (eTurbos) on the Turbo S - smaller turbines and compressors than traditional turbos, electrically pre-spooled for instant boost response. The 11 kW energy recovery from the eTurbos contributes to the hybrid system efficiency.
• Combined output: 473 hp (GTS) / 701 hp (Turbo S) - the Turbo S is the most powerful series-production 911 ever made
• 590 lb-ft torque from 2,300-6,000 RPM (Turbo S) - 200 RPM earlier peak than the 992.1 Turbo S, sustained 700 RPM longer at peak

Why Cerma is particularly valuable on modern 992.2 engines

• Twin turbocharger bearing protection. Both turbos run at high temperatures continuously, with the eTurbos on the Turbo S adding electrically-driven rotation that creates additional bearing loads. Cerma's bonded ceramic protects bearings continuously regardless of operating temperature.
• Plasma-coated cylinder walls + Cerma. Porsche engineered the cylinder walls for friction reduction with plasma coating; Cerma's ceramic bonds add another permanent friction reduction layer at the same wear surfaces.
• Hybrid start-stop cycling on T-Hybrid models. The hybrid system creates more frequent engine start-stop events than non-hybrid engines. Each restart is a brief moment of low oil pressure when bearing wear is concentrated. Cerma's mechanical bond provides protection from the very first revolution after restart.
• High-performance cycling on Turbo S applications. 701 hp T-Hybrid Turbo S cars see frequent transitions between cruising and full throttle - exactly the kind of cyclic loading that drives bearing and cylinder wall wear. Cerma's permanent friction reduction directly addresses this.
• 10,000-mile oil change intervals. Cerma's bonded ceramic stays in place across Porsche's extended service intervals - the protection doesn't degrade based on how long the oil itself runs.

The 991.2 Turbo and Carrera predecessors

For owners of 991.2 generation 911s (2017-2019 Turbo with the 580 hp twin-turbo flat-six, 2017-2019 Carrera with the 3.0L twin-turbo flat-six), the same Cerma 2oz gas treatment applies. The 991.2 generation is increasingly recognized as a sweet spot in 911 ownership - the first DFI 911 with the modern reliability profile, before the hybrid complexity of the 992.2.

4. Honest Disclosure: IMS Bearing Failure on 996/997.1 M96/M97

This is one of the most important sections in this guide because the IMS bearing failure on M96/M97 engines is one of the most-discussed automotive reliability issues of the past 25 years. If you own or are considering a 1999-2008 Porsche with the M96 or M97 engine, this section is essential reading.

What the IMS bearing is and why it fails

The Intermediate Shaft (IMS) is a shaft inside the M96 and M97 engines that's driven by the crankshaft via a chain and in turn drives the camshafts via additional chains. The IMS rotates at half the crankshaft speed and helps coordinate the timing of the four overhead cams across the two cylinder banks of the flat-six engine.

The IMS rides on a bearing - and Porsche made several different IMS bearing designs across the M96/M97 production run:

• Single-row sealed bearing (1997-2000 M96): Failure rate is very low. Generally considered the most reliable IMS bearing variant.
• Double-row sealed bearing (2000-2005 M96): Failure rate approximately 4-8% according to LN Engineering's analysis - higher than the original single-row but still relatively low.
• Single-row larger sealed bearing (2006-2008 M97): Failure rate approximately 8-10% per LN Engineering data - the highest failure rate of any IMS bearing variant.
• Non-IMS engines (2009+ 9A1 DFI engines, GT3 Mezger engines, Turbo Mezger engines): The IMS bearing was eliminated entirely. These engines do NOT have the IMS bearing issue.

When IMS bearings fail catastrophically

When an IMS bearing fails, the consequences can be severe:

• Bearing seizure can stop the IMS from rotating, causing immediate timing chain failure and catastrophic engine damage
• Bearing breakdown releases metal debris into the engine oil, contaminating bearings, cylinder walls, and oil passages throughout the engine
• Most failures lead to complete engine destruction requiring full engine rebuild ($15,000-$25,000+) or replacement ($25,000-$40,000+)

The Porsche community has documented thousands of IMS failures across the affected production years. While the failure rate is statistically a minority of cars (4-10% depending on bearing variant), the catastrophic nature of the failure makes it one of the most-discussed Porsche reliability concerns in history.

The LN Engineering IMS Solution

The proven solution is the LN Engineering IMS Solution or IMS Retrofit - a permanent ceramic-bearing replacement that eliminates the failure-prone original bearing entirely. The IMS Retrofit is typically performed during a clutch service (since the transmission must come out anyway, the labor cost is shared). Total cost is typically $1,500-$3,000 in parts plus labor when combined with clutch work, or $2,500-$5,000+ as a standalone job if no clutch work is needed.

The LN Engineering IMS Solution is the gold standard for 996/997.1 M96/M97 owners. If you own one of these cars and haven't had the IMS Retrofit performed, this is one of the most important preventive maintenance investments you can make.

Cerma's role with the IMS bearing

Let's be direct about what Cerma can and cannot do:

• Cerma cannot prevent IMS bearing failure. The failure mechanism is a sealed bearing wearing out from inside - Cerma is added to engine oil and bonds to engine metal surfaces, but the IMS bearing is sealed and doesn't receive engine oil flow. The IMS Retrofit is the only effective solution.
• Cerma cannot reverse damage from a failed IMS bearing. If the bearing has failed, metal debris has contaminated the engine, bearings have been damaged, and the only path forward is engine rebuild or replacement.
• Cerma is excellent for engines that have had the IMS Retrofit installed. Once the LN Engineering IMS Solution is installed, the IMS bearing concern is permanently resolved. Cerma applied during the next oil change provides permanent friction protection at every other wear surface in the engine.
• Cerma is excellent for non-IMS engines. The 2009+ 9A1 DFI engines, the legendary Mezger engines (GT3, GT3 RS, GT2, Turbo from 1999-2012), and the modern 992 engines do not have the IMS bearing issue. For these engines, Cerma is sound preventive maintenance like any other Porsche engine.

The proven workflow for 996/997.1 M96/M97 owners: (1) Get the IMS Retrofit installed during clutch service or as standalone preventive maintenance. (2) Apply Cerma at the next oil change for permanent ceramic protection at every other wear surface. This combination addresses both the IMS bearing concern and provides long-term friction protection for the rest of the engine.

5. Honest Disclosure: Bore Scoring on M96/M97 Engines

The second well-documented M96/M97 reliability concern is bore scoring - the development of vertical scoring marks on cylinder walls (particularly cylinder 6 on 996/997.1 911 applications). This issue affects a smaller percentage of M96/M97 engines than the IMS concern but deserves discussion because Cerma can play a meaningful preventive role here.

What bore scoring is and how it develops

The M96 and M97 cylinder walls use a Lokasil cylinder coating - a proprietary aluminum-silicon casting technology that creates a hard wear surface integrated into the aluminum block (rather than a separate cylinder liner). The Lokasil process produces cylinder walls with embedded silicon particles that provide the wear surface for the piston rings.

Over time on certain M96/M97 engines, the cylinder walls develop vertical scoring marks - typically appearing first on cylinder 6 (the rear-most cylinder on the right bank, which sees the highest oil temperatures and the lowest oil flow). The scoring is visible during borescope inspection and progresses over time. Eventually, scored cylinders develop:

• Compression loss (verified through compression testing)
• Piston slap (audible from cold start, sometimes through warm operation)
• Increased oil consumption
• Eventually catastrophic failure if not addressed

Why bore scoring develops

The community-documented causes of bore scoring on M96/M97 engines include:

• The Lokasil cylinder coating chemistry itself - the original formulation has shown wear susceptibility on certain production years
• Inadequate oil cooling on cylinder 6 specifically - the rear-most cylinder runs hotter and has lower oil flow than the others
• Track use and high-load operation accelerates the wear pattern
• Extended oil change intervals can contribute to oil degradation that reduces protective film thickness
• Cold-start operation - the period before the engine reaches operating temperature is when piston/cylinder wall wear is most concentrated

Most of these factors are cylinder wall friction issues - exactly the wear mechanism that Cerma's bonded ceramic addresses.

Cerma's role with bore scoring

For M96/M97 owners with healthy engines (no compression loss, no audible piston slap, no oil consumption issues), Cerma applied early provides preventive friction reduction at the cylinder walls and bearings - exactly the wear surfaces where bore scoring develops. Cerma's bonded ceramic creates a sacrificial wear layer that reduces the friction-driven wear mechanism that contributes to bore scoring.

For owners with already-developed bore scoring (typically detected through borescope inspection during pre-purchase or compression testing), the only effective remediation is mechanical: cylinder replacement, sleeving, or complete engine rebuild ($15,000-$30,000+). Cerma is preventive maintenance; it is not a substitute for proper diagnostic inspection and mechanical repair where damage already exists.

If you're considering a used 996/997.1 911, 986/987 Boxster, or 987 Cayman, the proven pre-purchase inspection workflow includes:

1. Compression test on all six cylinders to verify uniform compression
2. Borescope inspection of cylinder walls to verify no visible scoring
3. Oil analysis to detect any unusual metal wear
4. IMS Retrofit verification (or planning to install if not already done)
5. Service records review showing consistent maintenance and any track use disclosure

If the inspection comes back clean, the M96/M97 owner has a long-term ownership opportunity - apply Cerma at the next oil change for preventive friction protection at every wear surface, install the IMS Retrofit if not already done, and the engine has permanent protection for the long term.

6. Special Note: GT3, GT3 RS, GT4 RS - The 4.0L NA Flat-Six

The 4.0L naturally-aspirated flat-six powering the 911 GT3, GT3 RS, GT3 Touring, 718 Cayman GT4 RS, and 718 Spyder RS is one of the most engineering-impressive engines ever produced. The current 4.0L unit (used since the 991.2 GT3 in 2017+) represents the pinnacle of high-revving naturally-aspirated engine development.

4.0L NA flat-six specifications

The 4.0L naturally-aspirated flat-six produces 502-518 hp depending on application, with power peaks at 8,400-8,500 RPM and a 9,000 RPM redline. Engineering features include:

• Forged crankshaft with optimized counterweighting for high-RPM operation
• Forged connecting rods for handling extreme cyclic loads
• Forged pistons with oil-jet piston cooling
• Dry sump lubrication with multiple oil pumps - eliminates oil starvation under high lateral G-forces
• Individual throttle bodies on the GT3 RS for precise throttle response
• VarioCam Plus variable valve timing
• Plasma-coated cylinder walls for friction reduction and durability
• Sodium-filled exhaust valves for thermal management
• Lightweight valvetrain components including titanium connecting rods on some applications
• Aggressive cam profiles with significant overlap optimized for high-RPM power

Why Cerma is particularly valuable on GT engines

• 9,000 RPM operation stresses every wear surface. The valvetrain operates at speeds that other production engines don't reach. Cam lobes, valve springs, rockers, and lifters all experience peak loads thousands of times per minute. Cerma's bonded ceramic at every contact surface provides sustained protection across the engine's full operating range.
• Track use is common on GT cars. The GT3, GT3 RS, GT4 RS, and Spyder RS are designed for track use and most owners use them on tracks regularly. Track use sees sustained high-RPM operation, extreme thermal cycling, and bearing loads that street cars don't experience. Cerma's permanent friction reduction directly addresses this.
• Race-quality components benefit from friction reduction. Forged cranks, forged rods, oil-jet piston cooling, dry sump lubrication - these components are engineered for extreme operation but they still benefit from Cerma's ceramic bond at the wear surfaces (bearing journals, cylinder walls, cam lobes).
• GT car engine economics. The 4.0L NA flat-six is hand-assembled at the Porsche Zuffenhausen engine plant. Replacement engines run $30,000-$50,000+. Rebuilds are similarly expensive given the specialty nature of the work. The one-time $105.60 Cerma application is essentially negligible against that math.
• Cold-start protection on track-day cars matters. Many GT cars sit in garages between weekend drives or track events. Cerma's mechanical bond provides protection from the very first revolution after restart - exactly when the protective oil film is thinnest.

The previous 991.1 GT3 (2014-2017) used the 9A1 3.8L NA flat-six (475-500 hp), and the legendary Mezger engines used in earlier GT cars (996 GT3, 997 GT3, 997 GT2, 997 Turbo) are similarly compatible with Cerma. The Mezger engines are particularly valued in the Porsche community for their motorsport-derived reliability and lack of the IMS bearing issue that affected the M96/M97.

7. Special Note: Cayenne and Panamera V8 and V6 Turbocharged Engines

The Cayenne and Panamera have evolved into some of the most capable luxury performance vehicles in their segments. The current 2026 lineup includes the Cayenne S, Cayenne GTS, Cayenne Turbo, and Cayenne Turbo GT (powered by the MA2 4.0L twin-turbo V8), the Cayenne base and Panamera 4 (powered by the DCB 2.9L twin-turbo V6), and the Panamera GTS, Panamera Turbo, and Panamera Turbo S (also using the 4.0L V8 in higher-output tunes).

The MA2 4.0L Twin-Turbo V8

The MA2 4.0L twin-turbo V8 is shared with the Audi RS performance lineup (RS6, RS7, RS Q8) and the Lamborghini Urus, all under Volkswagen Group ownership. In Porsche applications, the engine produces:

• Cayenne S: 462 hp / 442 lb-ft
• Cayenne GTS: 493 hp / 487 lb-ft
• Cayenne Turbo: 631 hp / 627 lb-ft (current 2026)
• Cayenne Turbo E-Hybrid: 729 hp combined
• Cayenne Turbo GT: 650 hp (the highest-output non-hybrid Cayenne)
• Panamera GTS: 493 hp
• Panamera Turbo: 540 hp
• Panamera Turbo S: 621 hp
• Panamera Turbo E-Hybrid: 670+ hp combined

The MA2 V8 uses a hot-V configuration (turbos in the engine valley between cylinder banks) similar to the Mercedes M177 V8 and the BMW S63. The hot-V layout creates a high-heat environment in the engine valley where Cerma's heat-tolerant ceramic protection is particularly valuable.

The DCB 2.9L Twin-Turbo V6

The DCB 2.9L twin-turbo V6 is shared with the Audi S4/S5/S6/S7 (also under VW Group). In Porsche applications:

• Cayenne base: 348 hp / 368 lb-ft
• Panamera 4: 348 hp
• Older Macan S: 348 hp (Macan moving to electric for 2026+)
• Older Macan GTS: 434 hp
• Older Macan Turbo: 434 hp

Why Cerma works particularly well on Cayenne and Panamera engines

• Daily-driver application stresses. Cayenne and Panamera owners often use these vehicles as daily drivers - more miles, more cold starts, more thermal cycles than typical Porsche sports car ownership. Cerma's bonded ceramic provides protection through every cycle.
• High-output cycling on Turbo and Turbo S applications. 631+ hp Cayenne Turbo and Panamera Turbo S applications stress every wear surface continuously under boost. Cerma's permanent friction reduction directly addresses this.
• Towing applications on Cayenne. The Cayenne Turbo E-Hybrid can tow 7,716 lbs - significant load that stresses the engine continuously. Cerma's bonded ceramic provides sustained protection during towing operation.
• Long-distance highway use. Panamera owners frequently use these vehicles for long-distance driving, where sustained high-load operation accelerates wear at every contact surface.
• Hybrid integration on E-Hybrid models. The Cayenne E-Hybrid, Cayenne Turbo E-Hybrid, Panamera 4 E-Hybrid, Panamera 4S E-Hybrid, and Panamera Turbo E-Hybrid use plug-in hybrid systems with frequent gas-electric transitions. Cerma's mechanical bond provides protection through every restart event.

8. Special Note: The Carrera GT V10 and Other Collector Engines

For Porsche collectors and high-end enthusiasts, several limited-production engines deserve specific mention. These are some of the most valuable Porsche engines ever produced, and the long-term ownership horizon for these cars makes Cerma's permanent ceramic protection particularly valuable.

The Carrera GT V10 (2003-2007)

The Porsche Carrera GT used the M55 5.7L naturally-aspirated V10 - one of the most exotic production engines ever made. Originally developed for Porsche's LMP2000 Le Mans prototype program (which never raced due to corporate priorities), the engine produces 605 hp at 8,000 RPM with an 8,400 RPM redline. Built largely by hand, the V10 features:

• Race-derived F1-style architecture with a 68-degree V angle for optimal packaging
• Forged internals throughout - crank, rods, pistons all forged steel/aluminum
• Dry sump lubrication with multiple oil pumps
• Individual throttle bodies for each cylinder
• Titanium connecting rods
• Magnesium intake manifold

The Carrera GT is increasingly recognized as one of the great supercars of the 21st century. Used Carrera GTs commanded $1.0-1.5 million in early 2026 auctions. For Carrera GT owners, the one-time $105.60 Cerma application is essentially negligible against the value of the vehicle and the cost of any engine work.

The 918 Spyder hybrid (2013-2015)

The 918 Spyder used a 4.6L naturally-aspirated V8 (derived from the RS Spyder LMP2 race engine) plus two electric motors for combined output of 887 hp. The V8 portion of the powertrain accepts standard Cerma 2oz gas treatment. The hybrid components are sealed and unaffected by Cerma - same approach as Toyota i-FORCE MAX, Honda e:HEV, and other hybrid systems we've covered. Used 918 Spyders command $1.5-3.5+ million in 2026 auctions.

The Mezger flat-six lineage

The Hans Mezger-designed flat-six (used in the 996 GT3, 997 GT3, 997 GT2, 997 GT3 RS, 997 Turbo, and 997 GT2 RS - approximately 1999-2012) is widely regarded as one of the greatest production engines ever made. Mezger engines do NOT have the IMS bearing issue that affected the M96/M97 - they use a completely different architecture with a chain-driven oil pump and traditional bearing arrangements throughout. The Mezger engines have a documented track record of crossing 200,000+ miles in track-driven applications, an extraordinary durability achievement for high-performance engines.

For Mezger engine owners, Cerma is sound preventive maintenance - the engines benefit from permanent ceramic friction reduction the same way any high-performance engine does, and the long-term ownership horizons typical for these cars make Cerma's permanent protection particularly valuable.

9. Porsche A40 Oil Specification and Mobil 1 0W-40

Porsche uses a specific oil approval system called "Porsche A40" for modern applications. Understanding which oil meets the A40 specification - and confirming Cerma's compatibility - matters more on a Porsche than on most cars.

The Porsche A40 specification

Porsche A40 is a high-performance oil specification that ensures the oil meets Porsche's requirements for the modern lineup. The specification covers viscosity, additive package, base oil quality, and performance under extreme operating conditions. Porsche-approved oils carry the official A40 marking on the bottle.

Recommended Porsche-approved oils that work with Cerma:

• Mobil 1 0W-40 (European Car Formula or ESP X3 0W-40) - Porsche A40 approved, the factory-fill and dealer-recommended oil for nearly every modern Porsche
• Mobil 1 ESP X3 0W-40 - low-SAPS variant for emissions-sensitive applications
• Mobil 1 Racing 4T 10W-60 - for GT3/GT3 RS track use
• Liqui Moly Synthoil Race Tech GT1 10W-60 - for higher-output applications
• Castrol Edge Professional 5W-40 - some applications
• Pennzoil Platinum Euro L 5W-40 - Porsche A40 approved
• Shell Helix Ultra Professional AG 5W-30 - for some 992.2 applications calling for 5W-30

Cerma's compatibility statement

Cerma STM-3 is fully compatible with all Porsche A40-approved oils and all Porsche oil specifications. Cerma does not alter oil viscosity, base oil chemistry, additive package composition, or the Porsche A40 approval status of your oil. The Nano Silicon Carbide ceramic particles bond to engine metal surfaces - they do not interact with the oil's chemical properties or its certification status.

If your Porsche dealer or independent specialist asks about your oil during service, the answer is: standard Porsche A40-approved oil (or whatever you actually used). Cerma does not need to be disclosed - it's not part of the oil chemistry, it's bonded to your engine metal.

10. How to Install Cerma in Your Porsche

Installation is straightforward whether you DIY at home or have your Porsche serviced at the dealer or an independent specialist. Cerma can be added during any oil change.

1. Complete a normal oil change. Drain old oil, replace filter (Porsche OEM, Mahle, Mann, or any quality filter meeting Porsche specs), and add fresh oil to your specified weight - typically 0W-40 (most modern Porsches with Mobil 1 0W-40), 5W-40 (some applications), 10W-60 (GT3/GT3 RS track use), or per your owner's manual. For DIY: most Porsche flat-six engines hold 8.5-9 quarts, the 4.0L V8 holds 9-10 quarts, the 2.9L V6 holds 6.5-7 quarts.
2. Pour the Cerma 2oz bottle into your oil fill port. One full bottle for any Porsche gas engine - flat-four, flat-six, V6, V8, or V10.
3. Replace the oil cap and start the engine. No warm-up procedure required. Drive normally including spirited driving, canyon runs, autobahn-style cruising, or track sessions. The ceramic begins bonding from the first drive.
4. Drive 3,000 to 5,000 miles on the treated oil. The ceramic particles bond to engine metal during this break-in window. 992 Carrera owners typically notice smoother turbo response within the first 1,000 miles. GT3/GT4 RS owners often report quieter valvetrain at high RPM. Cayenne and Panamera owners typically notice quieter cold-start operation. T-Hybrid owners often report smoother gas-electric transitions.
5. Continue normal oil changes at Porsche's recommended intervals (typically 10,000 miles for normal service, more frequent for track use). The bonded ceramic stays - it doesn't drain out with the oil.

For complete step-by-step installation details with photos and FAQs, see our full installation guide.

11. What to Expect: First 3,000 to 5,000 Miles

First 500 miles:

Engine sound and idle quality often smooth out within the first few hundred miles. 992.2 Carrera owners typically notice particularly smooth turbo response. T-Hybrid owners (GTS, Turbo S) often report more seamless gas-electric transitions. GT3/GT4 RS owners often report subtle smoothing of the valvetrain noise at idle. Cayenne and Panamera V8 owners typically notice quieter cold-start operation. Older 996/997 owners often report slightly smoother operation, particularly during cold-start when piston/cylinder wall wear is most concentrated.

500 to 2,000 miles:

Throttle response feels more linear, particularly during transitions in and out of boost on turbocharged Porsches. Cold-start operation feels smoother on all Porsche engines. GT3/GT4 RS owners often notice slightly more refined behavior at the upper RPM range where the valvetrain is most active. Cayenne Turbo and Panamera Turbo owners often report more consistent torque delivery during sustained boost. T-Hybrid owners may notice slightly improved fuel economy in mixed driving.

2,000 to 5,000 miles:

The ceramic bond is largely complete. Friction reduction is at full effect. Many Porsche owners report measurable fuel economy improvements during this window - Cerma's customer-reported range is 4-21%* depending on use patterns. For a daily-driver Cayenne averaging 17 mpg, even a 5% improvement adds up to meaningful annual fuel savings, particularly given that Porsche recommends premium fuel for all gas-engine applications.

5,000+ miles (permanent):

The ceramic matrix is fully bonded. From here on, your Porsche has the friction reduction benefit for the life of the engine. Through every future oil change. Every cold start. Every spirited drive. Every track day. Every long road trip. No reapplication, no maintenance, no recurring cost. This is the maintenance approach that supports the multi-decade ownership horizons typical of dedicated Porsche enthusiasts and the appreciating-asset perspective common in the GT and collector Porsche communities.

12. Complete Porsche Drivetrain Protection

The engine treatment handles the engine. For full Porsche protection, three additional Cerma products extend the same ceramic technology to your transmission, differentials, and motor oil.

13. Porsche Warranty Considerations

Porsche Cars North America offers a 4-year/50,000-mile new vehicle limited warranty plus optional extended coverage through Porsche Approved Certified Pre-Owned (CPO) programs and Porsche Vehicle Service Protection. Many Porsche owners worry that aftermarket products will void these warranties.

The federal Magnuson-Moss Warranty Act protects you. Porsche Cars North America cannot void your warranty simply because you used an aftermarket engine treatment. They cannot deny a specific warranty claim unless they can prove the aftermarket product directly caused the failure they're refusing to cover.

Why Cerma is in a particularly strong warranty position:

• EPA ETV certified - independent third-party verification of performance under controlled conditions. Almost no other engine treatment carries this credential.
• Inert ceramic chemistry - Cerma doesn't change oil viscosity, additive package, or filtration. Your Porsche continues running on Porsche A40-approved oil with full chemistry compliance.
• Compatible with all Porsche dealer service routines - every oil change at Porsche's recommended 10,000-mile intervals, every Porsche Approved CPO inspection, no changes to your routine.
• Does not interact with diagnostic systems - the Porsche oil monitoring systems read driving patterns and time-based factors, not chemical composition.

CPO and used Porsche considerations:

For owners purchasing Porsche Approved CPO vehicles, the Porsche CPO warranty (typically 2 years/unlimited mileage from end of new-car warranty) is unaffected by Cerma application. For private-party used Porsche purchases, Cerma applied early in your ownership extends the engine's protection for the long-term horizon typical of used Porsche ownership.

For a complete breakdown of your aftermarket rights under federal law, see our complete guide to engine treatments and the Magnuson-Moss Warranty Act. Keep your purchase receipt, oil change records, and Cerma's EPA ETV documentation on file as smart practice.

Why Porsche Owners Choose Cerma

Frequently Asked Questions