Red Line Heavy ShockProof Gear Oil – 1 Gallon (3.785L)
Red Line Heavy ShockProof is a full synthetic gear oil designed for heavily loaded differentials and severe performance or racing applications. Its unique ShockProof technology provides very high film thickness while maintaining relatively low fluid friction.
Key Product Details
- Pack size: 1 US gallon (3.785L)
- Full synthetic polyol ester-based gear oil
- Exceeds API GL-5 performance requirements
- Film thickness greater than an SAE 75W-250 with fluid friction similar to a 75W-90
- Contains extreme-pressure additives and friction modifiers
- Designed for compatible limited-slip differentials, lockers and spools
Why Choose Heavy ShockProof?
- Very high film strength for extreme loads and shock loading
- High viscosity index supports more consistent film thickness as temperatures change
- Excellent shear stability and oxidation resistance
- Helps reduce sliding friction and operating temperature in compatible hypoid gears
- Developed for demanding road, off-road and motorsport applications
Typical Applications
Suitable for compatible heavily loaded racing differentials, Detroit Lockers, spools and other gear systems where Heavy ShockProof is specifically appropriate. It is widely used in sprint, midget, dirt late model, drag-racing and other severe-duty driveline applications.
Important Compatibility Note
Heavy ShockProof is not recommended for most synchronised manual transmissions because its extreme slipperiness may interfere with synchroniser operation. It is not a universal substitute for conventional 75W-90 or 75W-140 gear oil. Confirm the required lubricant type and application with the vehicle, gearbox or differential manufacturer before use.
Australian Stock
Imported from the United States and stocked in Australia by GL Lubricants. Red Line ShockProof products are specialty lubricants and may have limited local availability.
Frequently Asked Questions
How much oil is included?
One US gallon, equivalent to approximately 3.785 litres.
Can I use Heavy ShockProof in a synchronised manual gearbox?
Usually not. Red Line advises that it is not recommended for most synchroniser applications. Use the lubricant specified for the exact transmission.
