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Cerma Ceramic Heavy Duty Gear Oil 75W-90 EP SiC | Cerma
Cerma Ceramic Heavy Duty Gear Oil 75W-90 EP SiC | Cerma
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Cerma Ceramic Heavy Duty Gear Oil 75W-90 — STM-3 Nano Silicon Carbide Technology | Extreme Pressure Protection for Gear Sets & Differentials
Built for the hardest-working gear sets on earth. Cerma Ceramic Heavy Duty Gear Oil 75W-90 is engineered with STM-3 Nano Silicon Carbide (SiC) technology to deliver extreme pressure protection for differentials, axles, manual transmissions, transfer cases, and hypoid gear sets in trucks, tractors, construction equipment, and high-performance vehicles. Standard gear oils break down under extreme pressure and heat. Cerma's SiC ceramic particles permanently bond to gear tooth surfaces, creating a diamond-hard barrier (Mohs 9.5) that withstands temperatures up to 800°C without reacting to acids, alkalies, or molten salts. The result: quieter differentials, eliminated slippage, restored performance, extended drain intervals up to 4× longer, and gear sets that last significantly longer under the most demanding conditions. Available in quart, gallon, case, pail, and drum sizes.
- ✅ Triple Protection: Guards against wear, deposits, and shock loading in extreme pressure gear applications
- ✅ Extreme Pressure Rated: Withstands temperatures up to 800°C — designed for hypoid and spiral bevel gear sets
- ✅ Quiets Noisy Differentials: SiC ceramic bond eliminates gear noise, whine, and harmonics
- ✅ Fixes Transmission Issues: Restores smooth shifting — eliminates slippage, hesitation, and rough shifts
- ✅ Eliminates Seal Leaks: Conditions seals and lowers operating temperatures to prevent leaks
- ✅ Extended Drain Intervals: Up to 4× longer fluid life compared to conventional gear oils
- ✅ Limited Slip Compatible: Meets specifications for limited slip differentials (LSD)
- ✅ Lowers Operating Temperatures: Reduced friction means cooler-running gear sets
- ✅ High Oxidation Stability: Premium base stocks resist breakdown for long service life
- ✅ PTFE-Free & Solvent-Free: Environmentally safe formula made in the USA
Hypoid and spiral bevel gears operate under some of the most extreme conditions in any vehicle — high sliding forces, extreme pressures at gear tooth contact points, and intense heat generated by heavy loads. Conventional EP (extreme pressure) gear oils rely on sulfur-phosphorus additives that deplete over time. Cerma's STM-3 technology is fundamentally different. Its Nano Silicon Carbide (SiC) particles permanently bond to gear tooth surfaces, creating a ceramic matrix with a Mohs hardness of 9.5 and thermal stability to 2,730°C. This bond doesn't deplete — it strengthens with use, continuously protecting against the extreme sliding forces and shock loads that destroy conventional gear sets. The SiC technology also resists acids, alkalies, and molten salts up to 800°C, providing chemical stability far beyond any conventional gear oil.
⚙️ Gear & Differential Problems Cerma Solves
| Problem | How Cerma 75W-90 Fixes It |
|---|---|
| Noisy differentials & gear whine | SiC ceramic bond smooths gear tooth surfaces, eliminating noise and harmonics |
| Rough shifting / hesitation / slippage | Restores smooth gear engagement by filling micro-imperfections in synchro and gear surfaces |
| Seal leaks | Conditions seals + lower operating temps reduce seal degradation and shrinkage |
| Overheating under heavy loads | SiC friction reduction lowers operating temperatures in hard-working gear sets |
| Frequent gear oil changes | Extended drain intervals up to 4× longer — high oxidation stability base stocks |
| Gear tooth pitting & wear | Permanent SiC ceramic barrier (Mohs 9.5) eliminates metal-on-metal contact |
📦 Available Sizes
| Size | Best For |
|---|---|
| Quart (32 oz) | Single differential fill, manual transmission top-off |
| 12 Quart Case | Multiple vehicles, shop inventory, fleet supply |
| 1 Gallon | Front & rear differential service, transfer case fills |
| 4 Gallon Case | Equipment fleets, construction yards, farm shops |
| 5 Gallon Pail | Heavy equipment, commercial service operations |
| 55 Gallon Drum | Large fleets, dealerships, industrial operations |
Use the Size dropdown above to select your preferred quantity.
📋 How to Use Cerma Heavy Duty Gear Oil 75W-90
- Check Specification: Verify your differential, manual transmission, or gear set requires 75W-90 gear oil. Check for limited slip differential (LSD) requirements — Cerma 75W-90 is LSD compatible.
- Drain Old Fluid: Remove the drain plug and drain existing gear oil completely. Clean the drain plug magnet of metal particles.
- Fill with Cerma: Add the correct volume of Cerma Ceramic Heavy Duty Gear Oil 75W-90 through the fill hole until fluid reaches the bottom of the fill hole.
- Replace Plugs: Install drain and fill plugs to proper torque specification.
- Drive & Break In: Drive normally. The SiC ceramic technology begins bonding to gear tooth surfaces immediately and strengthens over the first hundred miles of use.
For the deepest initial ceramic bond, consider treating your gear set with Cerma Ceramic Gear Box Oil Treatment first (a one-time additive), then use Cerma 75W-90 Gear Oil for all subsequent fills. The treatment creates a deeper ceramic foundation that the gear oil then maintains.
📋 Specifications
| Specification | Details |
|---|---|
| Product Type | Ceramic Heavy Duty Gear Oil |
| Viscosity Grade | SAE 75W-90 |
| Service Classification | GL-5 Extreme Pressure |
| Limited Slip Compatible | Yes (LSD) |
| Core Technology | STM-3 Nano Silicon Carbide (SiC) |
| SiC Hardness | Mohs 9.5 |
| SiC Melting Point | 2,730°C |
| Chemical Resistance | Resists acids, alkalies, and molten salts up to 800°C |
| Drain Interval | Up to 4× longer than conventional gear oils |
| Formula | PTFE-free, solvent-free, environmentally safe |
| Made In | USA |
⚙️ Applications
| Equipment / Application | Compatible |
|---|---|
| Rear Differentials (open & limited slip) | ✅ Yes — LSD compatible |
| Front Differentials & Final Drives | ✅ Yes |
| Manual Transmissions (cars & trucks) | ✅ Yes — eliminates rough shifting |
| Transfer Cases (4WD / AWD) | ✅ Yes |
| Heavy-Duty Trucks & Semi Axles | ✅ Yes — designed for HD applications |
| Farm Tractors & Agricultural Equipment | ✅ Yes — heavy-load protection |
| Construction & Logging Equipment | ✅ Yes — extreme pressure rated |
| Motor Homes & RV Axles | ✅ Yes |
| Hypoid & Spiral Bevel Gear Sets | ✅ Yes — specifically designed for EP hypoid gears |
| Industrial Gearboxes | ✅ Yes (verify GL-5 specification) |
Cerma 75W-90 meets GL-5 extreme pressure specifications for automotive gear lubricants including limited slip differentials. Verify your equipment requires 75W-90 viscosity and GL-5 service classification.
🛡️ Cerma 75W-90 vs. Conventional Gear Oil
| Feature | Cerma 75W-90 | Conventional 75W-90 |
|---|---|---|
| Ceramic SiC Technology | ✅ Permanent ceramic bond | ❌ No |
| Chemical Stability | ✅ 800°C — resists acids & alkalies | Standard EP additives deplete |
| Quiets Noisy Differentials | ✅ Eliminates gear noise | ❌ No |
| Fixes Shifting Issues | ✅ Slippage, hesitation, rough shifts | ❌ No |
| Seal Leak Prevention | ✅ Conditions seals + cooler temps | ❌ No seal conditioning |
| Operating Temperature | ✅ Significantly lower | Standard |
| Drain Interval | Up to 4× longer | Standard |
| Limited Slip Compatible | ✅ Yes | ✅ Some brands |
🔗 Complete Your Cerma Drivetrain Protection
- Cerma Ceramic Gear Box Oil Treatment — one-time ceramic treatment for deeper initial gear protection
- Cerma Transmission Treatments — automatic and manual transmission ceramic protection
- Cerma STM-3 Engine Treatments — permanent ceramic protection for gas and diesel engines
- Cermax Motor Oils — ceramic synthetic oils up to 30,000-mile intervals
- Cerma Gas Fuel Treatment — clean injectors and improve fuel economy
- Cerma Diesel Fuel Treatment — for diesel truck and equipment fuel systems
- Cermax Hydraulic Oil AW46 — ceramic hydraulic fluid for equipment systems
❓ Frequently Asked Questions
What makes Cerma 75W-90 different from regular gear oil?
Will this quiet my noisy differential?
Is Cerma 75W-90 safe for limited slip differentials?
Can I use this in my manual transmission?
Can I extend drain intervals with Cerma 75W-90?
What types of gear sets is Cerma 75W-90 designed for?
Do I also need the Cerma Gear Box Treatment?
📞 239-344-9861 | ✉️ info@cermatreatment.com
🛡️ 30-Day Return Policy | 🚚 Free Shipping on Orders Over $150 | Ships to US & Canada
PTFE-Free | Solvent-Free | Environmentally Safe
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