Penn Grade 1 gear oil GL-4 SAE 80W-90, 1 qt (6 pack)
Multi-purpose GL-4 gear oil designed for brass, bronze, copper components and soft metals in classic manual transmissions. Helps smooth gear shifting with older gearboxes, including syncromesh systems
Highlights
- brass/bronze/copper compatibility
- synchromesh and older trans support
- premium mineral base with advanced additives
Pros
- suitable for brass, bronze, copper components
- designed for synchronizers and soft-metal components
- improves gear shifting feel
- compatible with classic transmissions and transaxles
- noted for quality and performance
Cons
- specific to older transmissions and syncromesh gearboxes
- mentions performance improvements may vary by vehicle
Best For
Features
- Specially blended using high quality premium mineral base stocks and select additive technologies.
- Designed to be used with yellow metallurgy (brass
- bronze
- copper) and other soft metals used in synchronizers
- bushings
- thrust washers and other components typically found in classic manual transmissions and transaxles.
- Not intended for use in limited slip applications and does not contain friction modifiers which can interfere with proper synchronizer performance.
- Not for use in applications requiring API GL-5 quality extreme pressure (EP) lubricants or where OEM specialized fluids are mandated.
