Transmission and Differential Fluid

All sets of 12 now 10% off regular price!

Red Line 75W140 is a full synthetic high-performance gear oil that is an excellent substitute for expensive factory fluid and an upgrade over off-the-shelf economy fluid. Red Line thoroughly evaluates the manufacturer's recommendations and only makes a fluid recommendation if their own product meets or exceeds the original specification. In many cases the Red Line synthetic will outperform the factory supplied fluids. We've been using Red Line Oil in our BMWs since we opened in 1994 and it remains our best selling BMW differential fluid. 75/140 is a specialized weight used for BMW M3, M5, and M6 models with the M Variable limited slip diff (all M models since 2001). Red Line fluid is used in nearly all E46 M3, E92 M3, E60 M5 we service as well as the custom differentials that we sell. It's great for the street where the polyol-ester base has natural lubricity and friction modifiers lead to smoother and quieter operation with lower operating temps than the factory fluid. We also use it in the track cars we build and prep. It may also be used in other specialized situations where a regular 75/90 will be too thin at elevated temperatures and your diff builder has approved a heavier weight oil.

Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, and SAE J2360. An alternative to the very expensive factory BMW SAF-XJ+FM diff fluid (#83222282583).

Ensure proper maintenance for your BMW's differential with the Genuine BMW Axle Oil Change Kit. This kit contains essential components, including a Genuine BMW fill bolt and two 500 ML Hypoid axle oils (G1). Note that no drain bolt is equipped on the vehicle. For fluid drainage, a transfer pump is required. Visit ECS Tuning's drivetrain section under maintenance for a comprehensive selection of tools, including transfer pumps, to facilitate the oil change process for your BMW's differential.

Key Benefits:

• Genuine BMW components for reliability
• Complete kit for axle oil change needs
• Access to transfer pumps and tools for fluid drainage

All sets of 12 now 10% off regular price!

Synthetic D4 ATF is suitable for use where Dexron III, Dexron II, or Mercon fluids are recommended. ATF D4 is similar to Red Line's MTL formula and can be used in many BMW manual transmissions where MTF or MTF-LT2 is called for. The D4 ATF provides significantly improved gear protection than most OEM oils. The balanced frictional characteristics provides smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure.

Features:

• Provides G-4 level gear protection (suitable for transmissions and transaxles, like the Corvette T-56).
• Provides smooth and consistent shifts.
• More stable than petroleum fluids; suitable for extended drain intervals.
• Does not varnish at high temperatures.
• Improved cold weather characteristics.

All sets of 12 now 10% off regular price!

Add to your limited slip differential to improve the fluid and wear prevention!

Features:

• Fully-synthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditions
• High viscosity-index (VI) to provide relatively constant viscosity and film thickness with varying temperature change
• Ester base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears
• Superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils
• Exceed API GL-5 specifications
• Engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear
• 4 oz. bottle