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Ask Your Question2001 BMW 740iL
Question: Tranny service
Question
kek1590, Denison, TX, April 26, 2011, 18:33
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My 2001 Bmw 740il has now 149000 miles on it. I replaced my old tranny with a used one (has about 65K miles) at 130000 miles. The old one failed. Do you know how often am I supposed to do the tranny fluid service? BMW says it is a lifetime fluid and no fluid exchange necessary. But I doubt it. Any ideas? Thanks for the last answer
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Answer #1
patrick mannion from Greg Solow's Engine Room, April 26, 2011, 21:45Reply
MasterJaguar, Mercedes and BMW use a similar transmission and say lifetime oil. Lifetime turns out to be as low as 70K. The price of the oil has dropped I would change it every 30,000 miles.
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