Cerma Ceramic Gear Treatment for Axles and Gear Box

Cerma Ceramic Gear Box & Axle Treatment — STM-3 Nano Silicon Carbide for Differentials, Transfer Cases & Gear Boxes

Cerma STM-3® Gear Box Treatment is a one-time ceramic application that permanently bonds Nano Silicon Carbide (SiC) to the internal metal surfaces of your differentials, axles, gear boxes, and transfer cases. Eliminates rough operation, quiets gear noise, and provides permanent protection against heat, friction, and sludge buildup.

One application per component. Permanent ceramic protection. No disassembly required.

✅ What Cerma Gear Box Treatment Does

• Quiets gear noise — ceramic coating on ring, pinion, and spider gears reduces gear whine and howl
• Restores smooth operation — eliminates roughness in differentials and transfer cases
• Reduces operating temperature — less friction means less heat (critical for towing and heavy loads)
• Prevents sludge and varnish buildup — SiC ceramic barrier keeps gear oil clean
• Extends gear oil life — cleaner internals mean fluid lasts significantly longer
• Protects against wear and corrosion — permanent ceramic matrix on all metal contact surfaces
• Reduces friction and drag — less drivetrain loss means more power to the wheels
• Conditions seals — helps prevent minor leaks from differential and transfer case seals

📋 How to Apply

1. Locate the fill plug — differentials and transfer cases have a fill plug on the housing
2. Add Cerma STM-3 Gear Treatment — pour the correct dose into the fill port
3. Drive normally — the SiC particles bond to gear surfaces during normal operation
4. Enjoy permanent protection — the ceramic matrix is now part of your drivetrain. No reapplication needed

No fluid drain required — add directly to existing gear oil. Compatible with all gear oil types and weights (GL-4, GL-5, 75W-90, 75W-140, synthetic, conventional). Safe for limited slip differentials (LSD) — does not affect clutch pack operation.

📦 Sizing & Pricing

Size	Application	Price
2 oz	Cars, SUVs, vans, light trucks — differentials, transfer cases, gear boxes	$70.40
6 oz	Semi trucks, commercial vehicles, heavy equipment — large differentials and gear boxes	$193.60

Tip: Many vehicles have both a front and rear differential (4WD/AWD) plus a transfer case — each requires its own treatment. For a full-size 4WD truck, you may need 3 bottles (front diff + rear diff + transfer case).

🚗 Ideal Applications

Component	Vehicle Types
Rear Differential	RWD cars, trucks, SUVs — open and limited slip
Front Differential	4WD/AWD trucks, SUVs, Jeeps
Transfer Case	4WD trucks, SUVs, Jeeps — part-time and full-time 4WD
Manual Transmission	Any vehicle with separate manual gearbox (see also Manual Transmission Treatment)
Axle Assemblies	Dana, AAM, Ford, GM axles — all sizes
Commercial / Semi	Semi truck tandem axles, heavy equipment final drives

🔬 How STM-3 Technology Works

Cerma STM-3® is not a gear oil additive — it's a ceramic surface treatment. The Nano Silicon Carbide particles penetrate into the sub-surfaces of ring gears, pinion gears, spider gears, bearings, and shafts — creating a permanent Silicon Carbide ceramic matrix.

SiC has a Mohs hardness of 9.5 (just below diamond) and a melting point of 2,730°C. This creates ultra-smooth, ultra-hard surfaces on every gear tooth and bearing race — dramatically reducing friction, heat, and wear. The coating survives fluid changes because it's bonded to the metal, not suspended in the oil.

Contains no solvents and no PTFE (Teflon). Non-corrosive. Environmentally safe.

🛡️ Cerma vs Traditional Gear Oil Additives

Feature	Cerma STM-3®	Traditional Additives
Technology	Nano Silicon Carbide (SiC)	Friction modifiers / PTFE
Application	✅ One-time (permanent)	❌ Every fluid change
Survives Fluid Changes	✅ Yes — bonded to metal	❌ No — drains out
Reduces Temperature	✅ Yes (less friction = less heat)	⚠️ Minimal
LSD Compatible	✅ Yes	⚠️ Some cause chatter
Non-Corrosive	✅ Yes	⚠️ Varies

🔗 Complete Drivetrain Protection

Protect every drivetrain component with Cerma's SiC ceramic technology:

• Cerma STM-3 Engine Treatment — one-time ceramic engine protection ($105.60 for gas engines)
• Cerma Automatic Transmission Treatment — for automatic transmissions ($70.40)
• Cerma Manual Transmission Treatment — for manual transmissions ($70.40)
• Cerma Ceramic Fuel Treatment — continuous 6-in-1 fuel system protection (from $10.95)
• Cerma Synthetic Motor Oil — SiC-enhanced oil with extended change intervals

❓ Frequently Asked Questions

Which size do I need?

The 2oz bottle ($70.40) treats one differential, transfer case, or gear box on cars, SUVs, vans, and light trucks. The 6oz bottle ($193.60) is for semi truck differentials, commercial vehicles, and heavy equipment with larger housings. Each component needs its own treatment — if treating front diff + rear diff + transfer case, you need 3 separate bottles.

Is it safe for limited slip differentials (LSD)?

Yes. Cerma STM-3® bonds to metal gear surfaces and does not affect the clutch packs or friction plates in limited slip differentials. No LSD chatter. No change in limited slip behavior. Safe for all open, limited slip, locking, and electronic differentials.

Will it fix a noisy differential?

In many cases, yes. Differential whine and howl are typically caused by friction and micro-imperfections on ring and pinion gear tooth surfaces. Cerma's SiC ceramic coating smooths these surfaces, which often significantly reduces or eliminates gear noise. If gears are severely worn or chipped, the treatment cannot repair structural damage, but it will help any differential that still functions.

Is this the same as the Manual Transmission Treatment?

Both use the same STM-3 Nano Silicon Carbide technology. The Manual Transmission Treatment is marketed for manual gearboxes with synchros. The Gear Box & Axle Treatment is marketed for differentials, transfer cases, and axle assemblies. Both work on any gear-oil-lubricated component — the distinction helps you choose the right product for each part of your drivetrain.

What gear oil is it compatible with?

Cerma STM-3® is compatible with all gear oil types — GL-4, GL-5, 75W-90, 75W-140, 80W-90, synthetic, conventional, and manufacturer-specific fluids. The treatment bonds to metal, not oil, so your gear oil choice doesn't affect the ceramic protection.

Do I need to drain the gear oil first?

No. Add Cerma STM-3® directly through the fill plug to your existing gear oil. No drain, flush, or disassembly required. For best results, apply after the vehicle has been driven (warm gear oil helps circulation).

Does it help with towing?

Yes. Towing puts extreme stress on differentials and transfer cases — high heat, high load, and high friction. Cerma's ceramic coating reduces friction and heat on gear contact surfaces, which is especially valuable under sustained towing loads. Lower differential temperature means less gear oil degradation and longer component life.

Is this a one-time treatment?

Yes. The SiC particles permanently bond to gear teeth, bearings, and shaft surfaces. The ceramic coating survives gear oil changes — when you drain and replace gear oil, the protection stays on the metal. No reapplication needed.

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Made in the USA by Cerma Treatment (Bijou Inc.), Fort Myers, FL. Environmentally safe. Solvent-free. PTFE-free. Non-corrosive. 30-day return policy. Free shipping on orders over $150. Ships to US & Canada. Questions? Call 239-344-9861 or email info@cermatreatment.com.