Applications and Compatibility When selecting a lubricant, confirming compatibility with the intended application is paramount. GL-5 gear oils contain higher levels of extreme pressure additives, making them too "slippery" for the synchronizers in manual gearboxes.
GL4 Gear Oil Manual Transmission: Optimal Lubrication for Synchros and Hypoid Gears
Consequently, GL-5 should never be used in manual transmissions or wheel bearings, as it can lead to premature wear and failure. It provides excellent oxidation resistance, maintaining viscosity and preventing the formation of harmful sludge and varnish at elevated operating temperatures.
When performing a differential fluid change, it is essential to follow the manufacturer's recommended service intervals and drain procedures. These standards define minimum requirements for viscosity, thermal stability, corrosion protection, and gear scuffing performance.
GL4 Gear Oil Manual Transmission: Optimal Friction and Compatibility for Manual Gearboxes
This formulation balances extreme pressure protection with the precise frictional characteristics required for hypoid gears, commonly found in rear-wheel drive and all-wheel drive differentials. The primary differentiator is the friction characteristic.
More About Gl4 gear oil
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