Driven Racing Oil GL4 Mineral Gear Oil - 80W90
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eBay1 x 1 Quart (0.946 Litre) - Driven Racing Oil GL4 Mineral 80W90 Gear Oil
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1 x Driven Racing Oil GL4 Mineral 80W90 Gear Oil - 1 Quart (0.946 Litre)Free delivery in 1–3 days£26.49Visit shop →
2 x Driven Racing Oil GL4 Mineral 80W90 Gear Oil - 1 Quart (0.946 Litre)Free delivery in 1–3 days£44.29Visit shop →
2 x 1 Quart (0.946 Litre) - Driven Racing Oil GL4 Mineral 80W90 Gear OilFree delivery in 1–3 days£44.29Visit shop →
3 x Driven Racing Oil GL4 Mineral 80W90 Gear Oil - 1 Quart (0.946 Litre)Free delivery in 1–3 days£63.90Visit shop →
3 x 1 Quart (0.946 Litre) - Driven Racing Oil GL4 Mineral 80W90 Gear OilFree delivery in 1–3 days£63.90Visit shop →
Product Information
Full details
This Driven Racing Oil GL4 Mineral Gear Oil (80W90) is designed for classic competition or performance vehicles requiring a GL4 specification. It offers superior protection for manual transmissions, transaxles, and differentials, especially in older gearboxes where modern synthetics can cause shifting issues. While it prevents gear clashing and ensures smooth synchronization, it is not suitable for plate-type Limited Slip Differentials (LSDs).
All features
| Model Part Number | GL480W901QT |
|---|---|
| Brand | Driven Racing Oil |
Extended Product Information
FAQs
Can I use this oil in my modern manual transmission?
This oil is specifically formulated for older or classic manual transmissions that require a GL4 specification and may have issues with modern synthetic oils. For most modern transmissions, a different, likely synthetic, oil specification will be recommended.
Is this oil safe for my differential?
Yes, it is safe for differentials that specify an 80W90 GL4 oil, provided they are not equipped with a plate-type Limited Slip Differential (LSD).
What does GL4 mean?
GL4 is an API (American Petroleum Institute) service designation for gear lubricants. It indicates a certain level of extreme pressure (EP) protection suitable for manual transmissions with yellow metal components, but less EP additive than GL5.
Why is it not suitable for plate-type LSDs?
Plate-type LSDs require specific friction modifiers to allow the clutch plates to slip and engage correctly. GL4 gear oils, especially mineral-based ones, typically do not contain these modifiers, which can lead to chatter or improper operation of the LSD.
How often should I change this gear oil?
Recommended change intervals vary greatly depending on the vehicle manufacturer, driving conditions (street vs. track), and mileage. Consult your vehicle's service manual for the specific recommendation.
Will this oil help my sticky synchronizers?
Yes, this oil is designed precisely for that purpose. Its mineral base and GL4 formulation provide the correct friction characteristics for synchronizers in many classic gearboxes that struggle with overly slippery synthetic oils.
Troubleshooting
Difficulty shifting gears or grinding
Ensure the correct GL4 specification oil is used and that it is not an LSD application. If using for the first time, allow a break-in period for synchronizers to adapt. Verify oil level is correct.
Noise or whining from transmission/differential
Check the oil level; a low level can cause noise. Inspect for external leaks. Persistent noise may indicate internal wear that requires mechanical inspection.
Oil leaks from seals
Check the oil level to ensure it hasn't overfilled. Persistent leaks suggest worn seals or gaskets that need replacement.
Pros and Cons
Pros
- Ideal for classic gearboxes that struggle with synthetic oils.
- Protects sensitive yellow metal components.
- Improves gear synchronization and reduces clashing.
- Specifically formulated for GL4 requirements.
- Proven compatibility with popular classic transmissions.
Cons
- Not suitable for plate-type LSDs.
- Mineral-based; may not offer the extreme temperature protection of synthetics.
- Requires careful checking of vehicle specifications to ensure GL4 is appropriate.
Setup, Compatibility & Care
Compatibility: This oil is specifically designed for applications requiring an SAE 80W90 GL4 gear oil. It is confirmed to be safe for use in manual transmissions, transaxles, and differentials within classic competition or performance cars. Crucially, it is NOT suitable for vehicles equipped with plate-type Limited Slip Differentials (LSDs). Always consult your vehicle's service manual or a specialist to confirm the correct oil specification before use.
Setup: To use, drain the old gear oil completely from the transmission, transaxle, or differential. Refill with Driven Racing Oil GL4 80W90 to the manufacturer's specified level, typically to the bottom of the fill plug opening. Ensure the vehicle is on a level surface during filling.
Care: Gear oil does not require regular 'care' in the same way as engine oil. However, periodic inspection of the fluid level and condition is recommended. Check for leaks around seals and gaskets. The primary 'care' involves adhering to the recommended change intervals, which vary significantly based on driving conditions and mileage. Consult your vehicle's service manual for specific recommendations.