What makes Cermax Ceramic 5W-20 different from regular synthetic motor oil?

Cermax 5W-20 contains Cerma's proprietary STM-3 technology with Nano Silicon Carbide (SiC) particles. Unlike conventional synthetic oils that only lubricate, Cermax actively treats metal surfaces at the molecular level, filling in microscopic imperfections to create an ultra-smooth, hardened surface. This results in reduced friction, lower operating temperatures, and a self-cleaning engine system.

What vehicles require 5W-20 motor oil?

5W-20 is commonly specified for many modern Ford, Honda, Chrysler, and other manufacturer vehicles designed for improved fuel economy. Always check your owner's manual for the correct viscosity. Using the manufacturer-specified viscosity is important for maintaining proper oil pressure, fuel economy, and warranty compliance.

How long does Cermax Ceramic 5W-20 Motor Oil last between oil changes?

Cermax Ceramic Motor Oil is engineered for extended drain intervals of up to 30,000 miles under normal driving conditions, thanks to its advanced carbon and moisture guard protection. However, always follow your vehicle manufacturer's recommended oil change intervals, especially during the initial Cerma Protocol treatment period.

Do I need to use a Cerma Engine Treatment before switching to Cermax 5W-20?

While not required, using Cerma STM-3 Engine Treatment before switching to Cermax Motor Oil provides the best results. The treatment creates the initial ceramic bond with your engine's metal surfaces, and Cermax oil then maintains and enhances that protection with every oil change. However, Cermax 5W-20 provides significant benefits even without a prior treatment.

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Cermax Ceramic 5W-40 Synthetic Motor Oil 30K Mile | Cerma

$19.50 USD

~~$22.94 USD~~ $19.50 USD

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Cermax Ceramic 5W-40 Synthetic Motor Oil — STM-3 Nano Silicon Carbide Technology | Up to 30,000-Mile Oil Changes

Experience the world's first self-cleaning motor oil in the European-grade viscosity built for high-performance engines. Cermax Ceramic 5W-40 Synthetic Motor Oil is engineered with Cerma STM-3 Run Clean Technology featuring Nano Silicon Carbide (SiC) for up to 30,000-mile oil change intervals. This advanced ceramic synthetic oil permanently bonds a diamond-hard SiC matrix to metal sub-surfaces, continuously cleaning, protecting, and restoring your engine with every mile. 5W-40 delivers the wider operating range demanded by European engineering, turbocharged performance engines, and vehicles driven hard in extreme temperatures — combining fast cold-start flow with a thicker protective film at high operating temperatures. Available in quart, gallon, case, pail, and drum sizes.

✅ Up to 30,000-Mile Oil Changes: Dramatically extends drain intervals — save time and money on maintenance
✅ Self-Cleaning Technology: STM-3 Run Clean Technology prevents sludge, carbon buildup, and deposit formation on metal surfaces
✅ Permanent Nano SiC Protection: Silicon Carbide particles continuously reinforce the ceramic bond with every oil change
✅ Wide Operating Range: 5W cold-start flow combined with 40-weight film strength at operating temperature — ideal for performance engines
✅ European Engine Approved: Meets the demanding requirements of European automakers specifying 5W-40
✅ Restores Power & Compression: Fills microscopic wear in cylinder walls, restoring lost horsepower and torque
✅ Reduces Friction, Harmonics & Vibration: SiC ceramic technology for smoother, quieter engine operation
✅ Carbon & Moisture Guard: Triple protection against wear, deposits, and emissions
✅ Volume Discounts: Buy Duo and save 1.35% — buy in bulk for additional savings
✅ PTFE-Free & Solvent-Free: No Teflon, no solvents — environmentally safe formula made in the USA

🔬 What Makes Cermax Different from Every Other Motor Oil?

Conventional synthetic oils — even premium European-spec brands — simply lubricate. They sit between metal surfaces and reduce friction temporarily, but do nothing to permanently repair wear or prevent deposit formation at the molecular level. Cermax is fundamentally different. Its STM-3 technology applies a permanent Nano Silicon Carbide (SiC) matrix seal within the metal sub-surfaces of your engine. SiC has a Mohs hardness of 9.5 (nearly as hard as diamond) and a melting point of 2,730°C. This ceramic matrix continuously cleans engine surfaces, prevents contaminants from depositing on metal, and maintains peak performance mile after mile — which is why Cermax delivers 30,000-mile drain intervals while actually making your engine cleaner over time, not dirtier.

🌡️ Why Choose 5W-40?

5W-40 is the gold standard for European vehicles and high-performance engines. It provides 5W cold-start flow (fast protection in cold weather) combined with a 40-weight film at operating temperature — thicker than 5W-20 or 5W-30. This wider viscosity spread makes 5W-40 the go-to choice for turbocharged European engines (BMW, Mercedes, Audi, VW, Porsche), high-performance applications where engines run hotter, and vehicles that see wide temperature swings. If your owner's manual specifies 5W-40 or a European oil specification, Cermax 5W-40 delivers that protection with 30,000-mile ceramic SiC technology.

📦 Available Sizes

Size	Best For
Quart (32 oz)	Individual oil changes, top-offs between changes
12 Quart Case	Multiple oil changes, stocking up for long-term use
1 Gallon	Single oil changes for most 4-cylinder engines
4 Gallon Case	Multi-vehicle households, Euro-spec shop supply
5 Gallon Pail	Shops, garages, and fleet maintenance
55 Gallon Drum	Commercial fleets, dealerships, high-volume shops

Use the Size dropdown above to select your preferred quantity. Volume discounts apply automatically when buying multiples.

🔬 How STM-3 Run Clean Technology Works

At the core of Cermax 5W-40 is Cerma STM-3 — the next generation lubricating oil with SiC (Run Clean) technology. The 100% active ingredient applies a permanent Nano Silicon Carbide (SiC) matrix seal within the metal sub-surfaces of your engine:

Self-Cleaning Action: Prevents contaminants from depositing on metal surfaces — your engine gets cleaner over time, not dirtier
Permanent Ceramic Bond: SiC particles bond to metal at the molecular level, creating a diamond-hard surface (Mohs 9.5)
Friction Reduction: Reduces metal-to-metal contact, lowering friction, harmonics, and vibration
Power Restoration: Fills micro-imperfections in cylinder walls, restoring horsepower and torque
Carbon Guard: Protects against performance-degrading sludge and abrasive carbon buildup
Moisture Guard: Superior protection against moisture contamination and corrosion
Non-Newtonian Properties: Gets stronger under stress — maximum protection during high-load, high-RPM conditions

📋 How to Use Cermax 5W-40

💡 For Best Results:

For maximum protection, first treat your engine with Cerma STM-3 Engine Treatment (a one-time permanent treatment), then use Cermax 5W-40 for all subsequent oil changes. The engine treatment creates the initial deep ceramic bond, and Cermax oil continuously reinforces it. Check our Value Packages for bundled savings on treatment + oil.

Check Capacity: Refer to your owner's manual for your engine's exact oil capacity and confirm 5W-40 is the recommended viscosity.
Drain Old Oil: Warm your engine, then drain existing oil and replace the oil filter.
Fill with Cermax: Add the correct amount of Cermax Ceramic 5W-40 Synthetic Motor Oil.
Drive & Enjoy: Drive normally. Cermax provides up to 30,000 miles of protection per oil change.
Do Not Mix Additives: Cermax is a complete protection system. Do not add any other oil additives or treatments.

📋 Specifications & Certifications

Specification	Details
Viscosity Grade	SAE 5W-40
API Service Rating	API SN, SM
Oil Change Interval	Up to 30,000 miles
Core Technology	STM-3 Nano Silicon Carbide (SiC) Run Clean Technology
SiC Hardness	Mohs 9.5
SiC Melting Point	2,730°C
Turbo/Supercharger Safe	Yes — all induction engines
Formula	PTFE-free, solvent-free, environmentally safe
Made In	USA

🚗 Compatibility

Vehicle / Engine Type	Compatible
BMW (3 Series, 5 Series, X3, X5, M-Series)	✅ Yes — BMW commonly specs 5W-40
Mercedes-Benz (C-Class, E-Class, GLE, GLC, AMG)	✅ Yes
Audi (A4, A6, Q5, Q7, S-Line, RS models)	✅ Yes
Volkswagen (Golf, Jetta, Tiguan, Atlas, GTI)	✅ Yes
Porsche (Cayenne, Macan, Panamera, 911 — verify spec)	✅ Yes (verify owner's manual)
Volvo (XC60, XC90, S60, V60)	✅ Yes (where 5W-40 is specified)
High-Performance & Turbocharged Gasoline Engines	✅ Yes — superior protection under boost
Supercharged Gasoline Engines	✅ Yes
Multi-Valve Fuel Injected Engines	✅ Yes
Passenger Cars, SUVs, Trucks, Vans	✅ Yes
Meets API SN/SM Requirements	✅ Yes

Always verify your vehicle manufacturer recommends 5W-40 viscosity. If your manual specifies 5W-30 or another grade, see our other Cermax viscosity options.

🛡️ Cermax 5W-40 vs. Leading Euro Synthetic Oils

Feature	Cermax 5W-40	Premium Euro Synthetic	Conventional Oil
Oil Change Interval	Up to 30,000 miles	7,500–15,000 miles	3,000–5,000 miles
Ceramic SiC Technology	✅ Yes	❌ No	❌ No
Self-Cleaning Action	✅ Run Clean Technology	Limited detergents	❌ No
Turbo Protection	Superior (40-wt film + SiC)	Good	Inadequate
Restores Compression	✅ Yes	❌ No	❌ No
Acid & Carbon Buildup Protection	✅ Yes	Partial	❌ No
Cost Per Mile	Lowest (fewer changes)	High (Euro oils are premium-priced)	Highest (frequent changes)

🔗 Complete Your Cerma Engine Protection

Cerma STM-3 Gas Engine Treatment — one-time permanent ceramic treatment (recommended before first Cermax oil change)
All Cermax Motor Oil Viscosities — 0W-20, 5W-20, 5W-30, 5W-40, 10W-30, 10W-40, 15W-40, 20W-50
Cerma Transmission Treatments — automatic and manual transmission ceramic protection
Cerma Gas Fuel Treatment — clean injectors and improve fuel economy
Cerma Turbo Nano Treatment — ceramic protection for turbochargers
Cerma Power Steering Treatment — protect power steering systems
Cerma Blue Ice A/C Treatment — improve A/C performance
Cerma Gear Box & Axle Treatment — protect differentials and gear sets

❓ Frequently Asked Questions

What makes Cermax 5W-40 different from regular European synthetic oil?

Cermax contains STM-3 Run Clean Technology with Nano Silicon Carbide (SiC) — a ceramic compound nearly as hard as diamond (Mohs 9.5). Unlike conventional Euro-spec synthetics that only lubricate, Cermax permanently bonds a ceramic matrix to your engine's metal surfaces, continuously cleans deposits, and prevents contaminant buildup. This is why it achieves up to 30,000-mile drain intervals while making your engine cleaner over time — far exceeding even the longest European service intervals.

Can I really go 30,000 miles between oil changes?

Yes. Cermax Ceramic Synthetic Motor Oil is engineered for up to 30,000-mile drain intervals under normal operating conditions. The SiC technology helps the oil maintain its protective and cleaning properties far longer than conventional synthetics. We recommend periodic oil analysis to confirm the optimal interval for your specific driving conditions, especially with high-performance European vehicles that may be driven aggressively.

Which vehicles use 5W-40 motor oil?

5W-40 is the standard specification for most European vehicles. BMW, Mercedes-Benz, Audi, Volkswagen, Porsche, and Volvo commonly specify 5W-40 for their gasoline engines. It is also used in many high-performance domestic and Japanese vehicles where the manufacturer recommends a 40-weight oil for additional protection under high load. Always confirm your vehicle's recommended viscosity in your owner's manual.

What's the difference between 5W-40 and 5W-30?

Both have the same cold-flow rating (5W), so cold-start performance is identical. The difference is at operating temperature: 5W-40 provides a thicker oil film than 5W-30, offering more protection for engines with wider tolerances, higher operating temperatures, or turbo bearings that run extremely hot. European engines are often designed around 5W-40 for this reason. Always use the viscosity your manufacturer specifies.

Is Cermax 5W-40 good for turbocharged engines?

Excellent choice. Turbochargers operate at extreme temperatures (exhaust gases can exceed 1,000°C) and spin at up to 250,000 RPM. The 40-weight film provides robust protection for turbo bearings, while the SiC ceramic technology creates an additional permanent protective layer on all metal surfaces. For maximum turbo protection, consider also adding Cerma Turbo Nano Treatment.

Do I need the Cerma Engine Treatment too, or just the oil?

For maximum results, we recommend starting with the Cerma STM-3 Engine Treatment (a one-time, permanent treatment) before switching to Cermax oil. The engine treatment creates the initial deep ceramic bond, and Cermax oil continuously reinforces it. However, Cermax oil provides significant benefits on its own — the SiC technology will build ceramic protection over time with each oil change.

What does "self-cleaning" oil mean?

Cermax's STM-3 Run Clean Technology applies a Nano SiC matrix that prevents sludge, carbon deposits, and contaminants from adhering to metal surfaces. Unlike conventional detergent-based oils that suspend particles until they're overwhelmed, Cermax creates a ceramic barrier at the molecular level that actively repels deposit formation. Your engine actually gets cleaner the longer you run Cermax oil — critical for European engines that are prone to carbon buildup.

Is Cermax available in other viscosities?

Yes. Cermax Ceramic Synthetic Motor Oil is available in multiple viscosity grades including 0W-20, 5W-20, 5W-30, 5W-40, 10W-30, 10W-40, 15W-40, and 20W-50. Visit our Motor Oil collection to find the right viscosity for your vehicle.

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Cermax Ceramic 5W-40 Synthetic Motor Oil 30K Mile | Cerma

Cermax Ceramic 5W-40 Synthetic Motor Oil 30K Mile | Cerma