80W-90 GL-5 Gear Oil
80W-90 GL-5 gear oils for Rover and Land Rover differentials, including Ravenol EPX for conventional open hypoid differentials and Ravenol LS for suitable limited-slip units.
Both are mineral SAE 80W-90 GL-5 oils, but their formulations suit different differential designs. EPX is our traditional oil for standard open differentials, while LS adds the friction characteristics required by compatible limited-slip differentials.
Showing all 2 resultsSorted by popularity
80W-90 GL-5 Differential Oil
Traditional Rover and Land Rover hypoid differentials operate under high sliding and contact loads, requiring strong extreme-pressure protection and a durable lubricating film. Ravenol EPX is our conventional mineral oil for standard open differentials, while Ravenol LS is formulated for limited-slip differential designs requiring specific friction characteristics.
| Job | Best place to start | What matters |
|---|---|---|
| Standard open Rover differential | Ravenol EPX 80W-90 | Traditional mineral GL-5 hypoid gear oil with strong load-carrying and extreme-pressure performance. |
| Limited-slip differential | Ravenol LS 80W-90 | GL-5 hypoid oil with limited-slip friction characteristics for differential designs requiring them. |
| ATB or other upgraded differential | ATB & Limited Slip Differential Oil | Match the lubricant to the actual differential design rather than assuming every upgraded differential requires LS oil. |
EPX or LS?
Ravenol EPX and Ravenol LS share the same SAE 80W-90 viscosity grade and API GL-5 classification, but they are formulated for different differential requirements. EPX is our traditional mineral oil for conventional open Rover and Land Rover differentials. LS is designed for limited-slip differential units requiring controlled friction characteristics.
Standard open differential
Ravenol EPX is the conventional mineral 80W-90 GL-5 oil in our range for standard Rover and Land Rover hypoid differentials.
Ravenol EPX is the conventional mineral 80W-90 GL-5 oil in our range for standard Rover and Land Rover hypoid differentials.
Limited-slip differential
Ravenol LS combines GL-5 extreme-pressure protection with the friction characteristics required by compatible limited-slip units.
Ravenol LS combines GL-5 extreme-pressure protection with the friction characteristics required by compatible limited-slip units.
ATB and locking differentials
ATB, locking and other aftermarket differential designs do not all require the same oil. Match the lubricant to the differential manufacturer's requirement.
ATB, locking and other aftermarket differential designs do not all require the same oil. Match the lubricant to the differential manufacturer's requirement.
Viscosity and specification
Two oils carrying the same 80W-90 and GL-5 classifications can still have different additive chemistry, friction characteristics and intended use.
Two oils carrying the same 80W-90 and GL-5 classifications can still have different additive chemistry, friction characteristics and intended use.
GL-5 and LT230 Transfer Boxes
API GL-5 does not automatically make a gear oil unsuitable for an LT230 or incompatible with yellow-metal components. Compatibility depends on the formulation of the individual lubricant. Ravenol EPX, for example, is compatible with non-ferrous metals and achieves an ASTM D130 copper strip result of 1b. EPX remains primarily our traditional differential oil, while Ravenol MZG 80W-90 and VSG 75W-90 are our more directly targeted LT230 oils.
Related Gear Oil Sections
| Section | Use it for |
|---|---|
| Gear Oil | Manual gearbox, transfer-box and differential oils organised by component, viscosity and specification. |
| 80W-90 GL-4 Gear Oil | Ravenol MZG, our traditional mineral LT230 transfer-box oil. |
| 75W-90 GL-5 Gear Oil | Fully synthetic 75W-90 oils including VSG and higher-performance differential lubricants. |
| ATB & Limited Slip Differential Oil | Specialist oils for ATB, limited-slip and other upgraded differential designs. |
