Red Line 10W40 Synthetic Motor Oil - 3.78L • 11405

Red Line 11405 10W40 Synthetic Motor Oil - 3.78L

High-performance Red Line synthetic engine oil for petrol and diesel engines requiring SAE 10W40 API SN/SM/SL/CF, ACEA A3/B3/B4 or a specifically supported equivalent specification.

Red Line 10W40 is formulated using polyol ester and PAO synthetic base stocks chosen for naturally strong multigrade viscosity characteristics, high-temperature protection and shear stability under demanding road, track and performance use.

The formulation is designed to provide strong film strength, oxidation resistance and stable viscosity while reducing reliance on unnecessary viscosity-index-improving additives that can shear down in severe service. It is fully compatible with conventional and synthetic motor oils.

Red Line publishes API SN/SM/SL/CF and ACEA A3/B3/B4 performance levels, along with a range of manufacturer reference equivalents including BMW, Ford, GM, Nissan, PSA and Toyota specifications.

• Product type: Full-synthetic engine oil
• Brand: Red Line Synthetic Oil
• Product reference / SKU: 11405
• Viscosity grade: SAE 10W40
• API service class: SN / SM / SL / CF
• ACEA service class: A3 / B3 / B4
• Container size: 1 US gallon / approximately 3.78L
• Base oil technology: Polyol ester / PAO synthetic base stocks
• Viscosity at 100°C: approximately 15.1 cSt
• Viscosity at 40°C: approximately 97 cSt
• Viscosity index: approximately 164
• HTHS viscosity at 150°C: approximately 4.4 cP
• NOACK evaporation loss: approximately 6%
• Pour point: approximately -45°C
• Oil compatibility: Compatible with conventional and synthetic motor oils

Fitment advice: Use where SAE 10W40 engine oil meeting API SN/SM/SL/CF, ACEA A3/B3/B4 or one of Red Line's specifically listed equivalent specifications is required. Always follow the vehicle manufacturer's specified viscosity and performance requirement.

Other items to consider: When carrying out an engine oil service, you may also want to consider purchasing an oil filter, sump plug washer, sump plug and other routine service components where required.

Useful tools / consumables: Drain pan, suitable socket or spanner, torque wrench, oil-filter removal tool, filling funnel, protective gloves, workshop towels and brake cleaner for external clean-up.

Difficulty guide: DIY Difficulty: Easy to Moderate. Engine oil servicing is generally straightforward, but the correct oil specification, quantity, filter replacement and sump-plug torque should be followed.

Why Red Line? Red Line Synthetic Oil is known for high-performance lubricants, fluids and additives developed for demanding road, track and motorsport use. Red Line products are chosen by enthusiasts and workshops for their focus on protection, thermal stability, friction control and application-specific performance.

What’s in the bottle: One 1 US gallon / approximately 3.78L container of Red Line 10W40 Synthetic Motor Oil.

Service notes: Drain the existing engine oil, replace the oil filter where required and refill with the manufacturer-specified quantity. Check the final oil level according to the vehicle manufacturer's procedure after running the engine and allowing the oil to settle.