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Red Line Synthetic Gear Lubricants

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Red Line Limited Slip Differential 75w140 Gear Oil

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).

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Part #: REDLINE8A
Price: $18.49 (USD) 
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Red Line 75W-110 Differential Gear Oil Red Line 75W110 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. 75/110 is a higher viscosity than the typical 75/90 called for in BMWs. The thicker fluid works better in hotter climates or very hard track use where the 90 weight might thin. The thicker oil will also help in locking the limited slip sooner. We generally only recommend this for track cars where the diff temps will get pretty high. For colder climates and regular street cars the standard 75/90 will be better.

Recommended or exceeds specifications for API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360, and Chrysler spec MS-9763.
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Part #: TMS1232
Price: $18.49 (USD) 
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Red Line 15W-40 Synthetic Oil - for Diesel's - 1 quart
  • Recommended for API CJ-4/CI-4 Plus/CI-4/CF/CH-4/CF-4
  • Popular for Light Duty trucks including Chevrolet Duramax, Dodge Cummins, Ford Power Stroke
  • Best choice in medium and heavy-duty diesel truck engines for maximum durability
  • Improved drain intervals provide excellent value for commercial fleet use
  • Also for API SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4 E7/E9, MB 228.3
  • Redline
    Part #: 21404
    Price: $12.95 (USD) 
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    E39 M5, Z8 Red Line Transmission & Differential Oils We have been using Red Line Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs. Not only do we not believe in 'lifetime' fluids, we believe that Red Line fluid will give you smoother shifts and as good or better protection for your transmission and diff internals than the factory fluids. We put RedLine Oil in all of our service vehicles, racecars, and our personal cars with outstanding results each time. It's also very effective at making short shift kits less notchy! This package includes two quarts of ATF D4 and two quarts of 75/140. Both are the correct weight and formula for the E39 M5 and Z8 transmission and diff and are API-certified.
    Redline
    Part #: E39M5-REDLINE
    Price: $60.88 (USD) 
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    Red Line Manual Transmission/Differential Fluid 75W-90

    All sets of 12 now 10% off regular price!

    Exceeds API GL-5.

    Red Line MTL may be used in transmissions which recommend 75W, 80W, or 85W GL-4 gear oils, or SAE 30 or 5W/10W30 motor oils. If a 90W GL-4 or SAE 40, 10W40, or 15W40 is required, MT-90 may be used. If the transmission or transaxle requires an SAE 90 GL-5 gear oil, then Red Line 75W90NS or 75W140NS Gear Oil may be used.

    Redline
    Part #: REDLINE25A
    Price: $65.95 (USD) 
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    Red Line Dual Clutch Transmission Fluid

    All sets of 12 now 10% off regular price!

    Full synthetic Double Clutch Transmission Fluid for BMW. Red Line has developed this full synthetic transmission fluid for the DCT transmissions. It's compatible with BMW's DCTF and MTF-LT-5 fluids as well as VW, Audi, Porsche, Ferrari, and other fluid specs. DCTF is blended with ester base stocks for shear stability, extended drain intervals and more consistent viscosity in variable temperatures. Utilizing high quality ingredients helps to provide better thermal stability, oxidation resistance and improved wear protection. Red Line can offer excellent fluid service at half the price of the factory OEM fluid.

    This item fits the following BMWs with DTC transmissions:
    2008-2011 E90 BMW M3 - Sedan
    2008-2013 E92 BMW M3 - Coupe
    2008-2013 E93 BMW M3 - Convertible

    Redline
    Part #: REDLINE20A
    Price: $18.95 (USD) 
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    Red Line Manual Transmission / Differential Fluid 75w90

    All sets of 12 now 10% off regular price!

    Red Line 75W90 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. 75/90 is the weight most commonly used in BMW differentials since the 1960s, including the factory clutch-type limited-slip diffs (exceptions being M3/M5/M6 cars since 2001). We use 75W90 in nearly all BMW chassis and 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 some track cars that don't already use the more aggressive 75/90NS fluid (without friction modifiers).

    Recommended or exceeds specifications for API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360, and Chrysler spec MS-9763. Matches the specifications for the factory BMW SAF-XO diff fluid (#07512293972).

    Redline
    Part #: REDLINE4A
    Price: $16.49 (USD) 
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    Red Line MTL Manual Transmission Fluid 75w80

    All sets of 12 now 10% off regular price!

    Red Line 70W/80W GL-4 MTL gear oil (SAE 5W30/10W30 engine oil viscosity) designed for use in BMW manual transmissions. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. The MTL can be used as a replacement for the factory MTF or MTF-LT2 used by BMW. Add MTL to older BMWs that have become tough to shift will restore shift smoothness. Many experts agree that this is best lubricant to use in BMW manual transmissions. Sold by the quart.

    Redline
    Part #: REDLINE3A
    Price: $16.95 (USD) 
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    Red Line D6 ATF Automatic Transmission Fluid

    All sets of 12 now 10% off regular price

    This is Red Line's latest synthetic transmission fluid that is compatible with BMW's MTF-LT3 transmission fluid. This is the transmission fluid used in both manual and automatic transmissions since the mid-2000's. To confirm, check the decal located on the side of your transmission. Price is per quart.

    Synthetic D6 ATF is a lower viscosity version of the D4ATF and is designed for better fuel efficiency in CAFE testing. Dexron VI requires a different approach to a conventional ATF formulation. Rather than beginning with a 7.5 cSt fluid and allowing a viscosity loss in use to drop to 5.5 cSt, the Dexron VI fluid requires a starting viscosity of less than 6.4 and a final drop to no less than 5.5 cSt. Red Line D6 will drop to no less than 6.1 cSt. Since the final viscosity after use of these fluids are similar, Dexron VI fluids can be used where Dexron III fluidswere previously recommended (with the exception of some manual transmission applications, our customers report).

    D6 ATF also provides significantly improved gear protection and will provide a GL-4 level of gear protection. The balanced frictional characteristics provide 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.

    Redline
    Part #: REDLINE7A
    Price: $12.49 (USD) 
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    Red Line D4 ATF Automatic Transmission Fluid

    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.
    Redline
    Part #: REDLINE1A
    Price: $11.95 (USD) 
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    Redline
    Part #: 57104
    Price: $19.32 (USD) 
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    E46 M3 Red Line Transmission & Differential Oils We have been using Red Line Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs. We put Red Line Oil in our 80,000 mile street M3 and noticed smoother shifts, especially on 1-2 and 2-3 shifts. Also, our short shift kit is less notchy! For our E46 M3 racecars we used RedLine in the transmission and diff. Some of our races can go as along as 6 hours and we're happy report outstanding results. To clear up any confusion this package is what we recommend for the E46 M3. Not only do we not believe in 'lifetime' fluids, we believe that Red Line fluid will give you smoother shifts and as good or better protection for your transmission and diff internals than the factory fluids (factory fluid is also not available in a quart-sized container - we've tried).This package includes two quarts of ATF D4 and two quarts of 75/140.
    Redline
    Part #: E46M3-REDLINE
    Price: $60.88 (USD) 
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    Red Line Lightweight ShockProof™ Gear Oil A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.Used in two-stroke and four-stroke motocross transmissions (often mixed in equal parts with SuperLight ShockProof™ Gear Oil). Used in most road-racing differentials with moderate power and dogring racing transaxles.

    We have been using RedLine Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs.
    Redline
    Part #: TMS1233
    Price: $17.95 (USD) 
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    Red Line Limited Slip Friction Modifier

    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
    Redline
    Part #: REDLINE18A
    Price: $7.95 (USD) 
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    Red Line Heavy ShockProof� Gear Oil A unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent--unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities. Recommended for heavily-loaded racing differentials and transmissions, Off Road racing and problem gearboxes. The viscosity characteristics allow the lubricant to resist throwoff and provide a film thickness similar to a 75W250 grade, while providing the same low fluid friction as an SAE 75W90. We have been using RedLine Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs.
    Redline
    Part #: TMS1234
    Price: $17.95 (USD) 
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    E46 325Xi/330Xi Red Line Oil Driveline Oil Package After a lot of requests we’ve done some research and come up with this small package of Red Line Synthetic Oil for the BMW 325Xi and 330Xi. These 4 quarts cover the manual transmission, transfer case, and the front and rear differentials.
    LocationFill Quantity (quarts)
    5-speed manual transmission (Red Line D4 ATF)1.1 to 1.3
    Transfer Case (RedLine D4 ATF)0.16
    Front Differential (Red Line 75/90)0.74
    Rear Differential (Red Line 75/90)1.06


    We don't believe in "lifetime fluids". With BMW transmission life seemingly becoming shorter with each generation, we think it's just good-ole' common sense to replace the fluid at regular intervals (35-50,000 miles). Let's face it: transmission fluid at 50, 70, or 100,000 miles is not going to be as effective as when it left the factory. And if you drive your BMW like a driving machine and not like hearse, you'll want the extra protection that regular fluid changes offer.

    In our TMS Service bays we use Red Line Synthetic Oils. Theyhave been enormously effective on the racetrack - helping us to win dozens of races and championships. And their track-record on the street is second-to-none. Red Line Oil is designed not to be a 'lifetime' fluid with compromises inperformance made for longevity. Red Line is simply designed to be the best lubricant you can use in any application. Red Line D4 ATF oil meets the requirements where Dexron III and Mercon fluids are specified. The 75/90 gear lube exceeds API GL5 standards.
    Redline
    Part #: E46Xi-REDLINE
    Price: $56.88 (USD) 
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