Purpose and Specifications

EUROLUB GEAR UNI 80W-90 is a tough multi-grade transmission oil built for manual transmissions and axle drives in cars, trucks, and heavy equipment. It stays thick enough at high temps up to 100°C to shield gears from wear during towing or heavy loads, while flowing well down to -26°C for smooth shifts in cooler weather.

This gear oil cuts friction, fights rust, and handles extreme pressure from hypoid gears without breaking down. Expect reliable protection in normal operating temps of 50-80°C, with a safety limit under 90°C to avoid damage. Shelf life is typically 3-5 years when stored cool and dry.

When to Use / Replace?

• Use it in: Manual gearboxes, differentials, and transfer cases in moderate to warm climates, or heavy-duty rigs like trucks and tractors.
• Replace every: 50,000-100,000 km or 24-36 months under normal driving; check sooner (every 20,000 km) for towing, off-road, or severe service.
• Ideal temps: Safe from -26°C to 100°C; switch to thinner grades like 75W-90 if winters drop below -30°C.

FAQ

Is EUROLUB GEAR UNI 80W-90 good for cold starts?
It flows adequately down to -26°C, making shifts smoother than thicker oils, but not the best for extreme arctic cold.

Can I use it in my differential?
Yes, perfect for hypoid axles with high-load protection; avoids wear in rear ends during hauling.

How often should I change it?
Every 2-3 years or 60,000 km for most vehicles; inspect fluid color and level yearly.