Castrol Classic XXL40 SAE 40 Monograde Engine Oil 1L – Classic Car Motor Oil 1926/7176

Castrol Classic XXL40 SAE 40 is a premium-quality monograde mineral engine and gearbox oil, specially formulated for veteran, vintage and classic vehicles requiring a straight SAE 40 lubricant.

Designed for older engine and gearbox technologies, this classic mineral oil provides reliable lubrication, strong oil film protection and effective anti-wear performance.

Its carefully selected additive formulation helps control low-temperature varnish formation, maintain oil pressure and protect vital mechanical components against wear.

Ideal for pre-1950 cars, pre-1970 motorcycles and compatible classic engines and gearboxes where SAE 40 monograde oil is specified.

Key Features & Benefits

• Brand: Castrol Classic

• Product: XXL40 Monograde Engine Oil

• Product Code: 1926/7176

• SAE 40 Viscosity – designed for classic engines and gearboxes requiring straight 40-grade oil.

• High-Quality Mineral Formula – developed for traditional engine and transmission lubrication requirements.

• Anti-Wear Protection – helps protect moving components from friction and premature wear.

• Supports Oil Pressure – helps maintain suitable oil pressure in compatible older engines.

• Strong Lubricating Film – supports reliable protection of engine and gearbox components.

• Varnish Deposit Control – selected additives help reduce low-temperature varnish formation.

• Classic Vehicle Compatibility – suitable for selected veteran, vintage and classic vehicles.

• Engine & Gearbox Applications – suitable where SAE 40 monograde mineral oil is recommended.

Suitable Applications

Designed for compatible classic vehicles and mechanical systems, including:

• Pre-1950 Cars – vintage and veteran petrol engines requiring SAE 40 oil.

• Pre-1970 Motorcycles – classic motorcycle engines with suitable lubrication requirements.

• Classic Engines – older engine designs requiring monograde mineral lubrication.

• Classic Gearboxes – compatible transmissions specifying SAE 40 engine-type oil.

• Vintage Vehicle Restoration – routine maintenance of suitable historic vehicles.

Product Specifications

• Manufacturer: Castrol

• Product Range: Castrol Classic

• Product Name: XXL40

• Part Number: 1926/7176

• Product Type: Engine & Gearbox Oil

• Oil Base: Mineral

• Viscosity Grade: SAE 40

• Viscosity Type: Monograde

• Application: Classic Engines & Compatible Gearboxes

• Suitable Vehicles: Selected Pre-1950 Cars & Pre-1970 Motorcycles

• Volume: 1 Litre

• Condition: Brand New

• Quantity: 1 × 1L Bottle

Important Compatibility Information

Castrol Classic XXL40 is intended for engines and gearboxes specifically requiring SAE 40 monograde mineral oil.

Not all classic vehicles or gearboxes use the same lubricant specification. Always consult the vehicle manufacturer's recommendations before use.

This product is not a substitute for modern multigrade engine oils or dedicated transmission oils unless the relevant SAE 40 specification is explicitly approved.

Package Includes: 1 × Castrol Classic XXL40 SAE 40 Monograde Mineral Oil 1 Litre (1926/7176).