The fluid formula has changed over the years - MTF-LT-1, LT-2, LT-3, LT-5, and FFL-4. The "Lifetime" has never been fully explained and we don't buy into it, especially when fresh fluid typically makes a huge improvement in shift quality and smoothness. This is the era that BMW started using "Lifetime" fluids, indicated by a "MTF" label on the transmission. For track use, an ATF may become too slippery at high temps, in which case we recommend the Red Line MT-LV which has a slightly heavier weight that holds up better.Ģ000s-2010s M 6-speed and SMG (not DCT) MTF In our experience, it outperforms even fresh factory fluid, especially in colder temps. You can find a Dexron III spec almost anywhere but we are impressed with the performance of Red Line ATF D4 in manual transmissions. Recommended replacement interval: 30,000-40,000 milesġ990s-2000s 5-speed and 6-speed ATF (excluding E46 M3, E9X M3, Z4M)įrom the mid-1990s, nearly all BMW manual transmissions, except 6-speed M models, use a Dexron III ATF oil, indicated by an "ATF" label on the transmission. Because of the narrow applications we don't have a recommended alternative to the Mobil fluid. These transmissions use a specific Mobil SHC 630 synthetic fluid (SAE 90 weight). The 1984-1986 325e/528e should have a green "Special Oil" label on the transmission. However, some transmissions will have an orange ATF label and you should use a Dexron III ATF fluid. If no label is present, the official recommendation is any GL-4 gear oil. Our favorite is the Red Line MTL. Most manual transmissions on vintage models do not have a fluid label on the transmission because nearly all gearboxes took the same fluid - a universal GL-4. Note: for the purposes of this page, "Vintage" refers to all BMW cars built up to and including the E30 3-series.īMW Manual / SMG / DCT Transmission Fluid BMW Transmission & Differential OilThis page covers fluid information and recommendations for BMW manual and automatic transmissions, rear differentials, and front differentials on xDrive models.
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