Purpose and Specifications

MOTUL CLASSIC OIL SAE 50 is a premium mineral monograde engine oil designed for vintage cars, motorcycles, and transmissions built between 1900 and 1950. This 2-liter can delivers reliable lubrication for gasoline or diesel 4-stroke engines, protecting flat-tappet cams, bearings, and brass or copper parts with high zinc additives that fight wear during high-heat operation up to 258°C.

Its low detergent formula keeps paper, felt, and fabric gaskets intact to prevent leaks, while excellent adhesion coats internals for easy starts after months of storage. Use it year-round for smooth pressure, low oil burn, and longer engine life in classic vehicles.

When to Use / Replace?

Perfect for pre-1950 engines in hot rods, collector cars, or bikes driven seasonally or raced occasionally. Swap every 3,000-5,000 km or 6 months to clear soot buildup and maintain protection. Ideal for break-in on rebuilt motors with short drain intervals; shelf life exceeds 5 years if stored cool and dry.

• High-temp guard: Stays thick above 100°C for hard runs.
• Cold-start flow: Pumps fast below 0°C, cuts startup wear.
• Storage safe: Rust-proof for winter layups over 12 months.

Frequently Asked Questions

Is MOTUL CLASSIC SAE 50 safe for my old seals?
Yes, its very low detergents won't swell or dissolve paper/felt gaskets, unlike modern oils.

Can I use it in gearboxes?
Absolutely, fully compatible with non-ferrous metals in vintage transmissions for smooth shifting.

How often should I change it?
Every 3,000-5,000 km or 6 months, or sooner if racing, to keep deposits low.