Purpose and Specifications

MOTUL CLASSIC EIGHTIES 10W40 is a premium semi-synthetic engine oil crafted for modern classic and youngtimer vehicles from the 1970s and 1980s. This high-ZDDP formula (over 1800 ppm zinc and phosphorus) with molybdenum additives delivers superior protection for flat-tappet cams, high-lift valvetrains, and critical engine parts in naturally aspirated, supercharged, or turbocharged 4-stroke gasoline and diesel engines.

It flows smoothly at cold starts down to -39°C to cut wear during startups, even after long storage, and maintains a strong oil film up to 234°C for reliable high-heat performance. The 10W40 viscosity ensures consistent pressure across operating temps from -30°C to over 150°C, reducing friction, boosting efficiency, and extending engine life.

• API SL spec meets vintage standards with modern motorsport tech
• 2-liter volume, perfect for precise oil changes
• Excellent rust protection for stored classics
• Mixable with mineral or synthetic oils

When to Use / Replace?

Use in European, American, Asian (including boxer and rotary), and British cars from the 1980s era. Ideal for daily drivers, weekend cruisers, or track days where older engines need flat-tappet cam safety and anti-wear strength.

Replace every 5000-8000 km or 6-12 months, or at least once a year regardless of mileage to prevent acid buildup and maintain protection. Shelf life is 5 years unopened in cool, dry storage.

FAQ

Is MOTUL CLASSIC EIGHTIES 10W40 safe for my 1980s flat-tappet engine?
Yes, its high ZDDP levels over 1800 ppm provide essential anti-wear protection for cams and lifters that modern oils lack.

What temps does it handle?
Cold starts to -39°C and stays thick past 200°C, perfect for all-season use from winter commutes to summer races.

Can I use it in diesel classics?
Absolutely, formulated for both gasoline and diesel 4-stroke engines, turbo or naturally aspirated.