Performance Advantages Summary Reduces gear noise and vibration for a quieter ride. The defining characteristic of a GL-4 lubricant is its ability to provide adequate protection against pitting and scuffing under moderate shock loads and sliding conditions.
Heavy Load GL-4 Gear Oil for Superior Gear Protection
It contains a balanced additive system that offers less extreme pressure protection compared to its GL-5 counterpart, making it suitable for applications where sliding speeds are lower. These additives, while effective, can sometimes corrode yellow metals found in brass synchronizers, which is why GL-5 is not recommended for manual transmissions.
Provides reliable protection across a wide temperature range. The formulation is designed to minimize friction within the gear mesh, which contributes to smoother power delivery and improved fuel efficiency.
Heavy Load GL-4 Gear Oil for Superior Protection and Quiet Performance
Key Benefits for Mechanical Systems Utilizing the appropriate GL-4 specification offers distinct advantages for the mechanical integrity of a vehicle. Many rear-wheel-drive cars and light trucks produced during the late 20th century explicitly require this formulation for their manual transmissions and rear differentials.
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