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Protect your vintage powerplant with the oil it was engineered for. Castrol Classic XL 20W-50 is a premium conventional multigrade lubricant formulated specifically for pre-1980 engines, providing the thick protective film and specialized chemistry that modern, thin oils simply cannot match.

Product Specs

• Viscosity: 20W-50Type: Mineral-based conventional multigrade
• Compatibility: Pre-1980 classic cars and motorcycles
• Formulation: Low-detergent, high-zinc (ZDDP) content
• Size: Available in traditional 1-gallon or 5-litre tins

Why Choose Castrol Classic XL?

• Tailored Viscosity: Engineered to maintain oil pressure in older engines with larger internal clearances, preventing the "thinning out" issues of modern lubricants.
• Low Detergent Formula: Specifically designed to avoid the aggressive cleaning of modern oils, which can dislodge old deposits and lead to blocked oil galleries or seal leaks.
• Maximum Wear Protection: Contains high levels of anti-wear additives to protect flat-tappet camshafts and heavy-load valve trains from premature wear.
• Optimised Consumption: The heavier base oils help reduce oil bypass and consumption in high-mileage engines, keeping your classic running cleaner for longer.

Installation Tip: For best results, always change your oil filter when switching to Castrol Classic XL. This oil is ideal for summer use in most classic engines or year-round use in temperate climates where superior film strength is required.

Key Point: Designed specifically for pre-1980 vehicles to ensure maximum engine longevity.

The Castrol Classic range is designed for vintage/classic vehicles and helps to ensure peak running conditions and maximum wear protection for your engine, where modern lower viscosity oils would fail

Key Features

• For pre-1980 classic cars and motorcycles
• Conventional multigrade
• Low detergent
• Excellent oil consumption
• High level engine protection