Purpose and Specifications

Eurol Transfluid STF 1L is a premium synthetic transmission oil designed to fix shifting problems in manual and automatic gearboxes. This 75W80 API GL4 fluid delivers smooth gear changes in cold starts down to -51°C and stays reliable up to 198°C flash point, protecting against wear, corrosion, and friction for quieter, easier operation.

• Flows perfectly at low temps for instant shifting without grinding
• Maintains thickness under heat and heavy loads for long-term protection
• Fuel-saving formula reduces friction and heat buildup
• Safe for all seals, extends gearbox life with superior stability

When to Use / Replace?

Use Eurol Transfluid STF when your transmission feels stiff, noisy, or hard to shift, especially in extreme weather. Ideal replacement every 60,000-100,000 km or 3-5 years, or sooner if you notice rough shifts. Shelf life is 5 years unopened. Perfect for high-load driving in temps from -40°C to +120°C operating range.

FAQ

Can I use this in any manual transmission?
Yes, it's ideal for gearboxes needing GL4 spec with shifting issues, but not for GL5 hypoid gears.

Will it quiet a noisy gearbox?
Absolutely - users report drastically reduced noise and smoother shifts right after change.

How much for a full flush?
Most cars need 2-3 liters; check your manual for exact capacity.