PennGrade 1® Limited Slip GL-5 Gear Oil SAE 80W-90 is intentionally formulated for enthusiasts and builders who demand smooth performance and dependable protection from limited slip differentials and driveline components.
Designed with premium base stocks and advanced friction modifier technology, it helps reduce chatter while delivering outstanding protection for straight cut, spiral bevel and hypoid gears under high torque conditions. Built for classic cars, muscle cars, trucks and performance applications, this formula provides the confidence drivers expect whether cruising the street, towing heavy loads or putting power down at the track. For those who intentionally build performance into every part of their vehicle, PennGrade 1® gear oil is engineered to protect what drives it forward.
