Red Line 10W40 Synthetic Motor Oil - 946ml • 11409

Red Line 11409 10W40 Synthetic Motor Oil - 946ml

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 a full-synthetic PAO/ester-based engine oil developed for strong wear protection, friction reduction and high-temperature stability under demanding road, performance and motorsport use.

Red Line particularly recommends this viscosity for medium- and heavy-duty petrol engines, performance street and track vehicles, and engines that experience high oil temperatures. Its naturally high viscosity index helps maintain a strong lubricating film around bearings, camshafts and other highly loaded components.

High detergency helps maintain engine cleanliness, while the low-volatility synthetic formulation helps reduce evaporation and oil consumption. The oil is fully compatible with conventional and synthetic motor oils.

• Product type: Full-synthetic engine oil
• Brand: Red Line Synthetic Oil
• Product reference / SKU: 11409
• Viscosity grade: SAE 10W40
• API service class: SN / SM / SL / CF
• ACEA service class: A3 / B3 / B4
• Container size: 946ml / 1 US quart
• Base oil technology: PAO / polyol ester 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
• Typical use: Performance road, street/strip, track and high oil-temperature applications
• 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 appropriate. 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 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 946ml / 1 US quart bottle 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.