Purpose and Specifications

ORLEN HIPOL GL-5 80W-90 5L is a tough mineral transmission oil built for vehicle gearboxes and final drives under extreme conditions. It delivers excellent lubrication to cut mechanical wear, fights oxidation to keep oil fresh longer, prevents rust on metal parts, and stops foam buildup for smooth shifting.

This GL-5 spec oil shines in high-load setups like trucks and heavy machinery, approved for Huta Stalowa Wola equipment. The 80W-90 viscosity flows easily down to -30°C for cold starts and stays thick up to 120°C+ under heavy heat and pressure. 5-liter pack suits most manual transmissions and differentials.

When to Use / Replace?

• Use it in: Manual gearboxes, rear differentials, and axles in cars, trucks, or off-road vehicles facing tough loads, towing, or harsh weather.
• Replace every: 40,000-60,000 km or 24-36 months under normal driving; check sooner (every 20,000 km) for heavy towing or dusty roads.
• Operating temps: Reliable from -30°C winters to over 120°C in hot, loaded gears.
• Shelf life: 3-5 years sealed in cool, dry storage.

FAQ

Is ORLEN HIPOL GL-5 80W-90 safe for my limited-slip differential?
It meets GL-5 standards with strong anti-wear additives, but add limited-slip friction modifier if your diff requires it for quiet operation.

Can I mix it with other gear oils?
Best to fully drain and refill with pure ORLEN HIPOL to maximize protection; mixing may dilute performance in extreme conditions.

What's the difference from GL-4 oils?
GL-5 offers superior protection for hypoid gears under high pressure, ideal for modern axles—don't use GL-4 where GL-5 is specified.