Red Line heavy shockproof gear oil - 1 quart (12 pack)
Fully-synthetic gear oil designed for extreme conditions with enhanced protection and differential efficiency. Customers note smoother, quieter shifts in Harley-Davidson transmissions and improved neutrality and smoothness, though some report slipping in first gear
Highlights
- extreme-condition lubrication
- longer drain intervals
- improved shift smoothness
Pros
- fully-synthetic formulation
- extreme-condition lubrication
- reduces wear and improves shift quality
- longer drain intervals
- compatible with API GL-5 specifications
Cons
- some users report slipping when starting in first gear
Best For
Features
- Fully-synthetic polyol ester base stock formulation for lubrication
- Provides protection under extreme conditions and reduces wear
- Exceeds API GL-5 specifications for differential protection and efficiency
- Longer drain intervals for maintenance-friendly operation
- Not recommended for most synchro applications due to extreme slipperiness
