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      02-10-2010, 02:27 PM   #61
raceyBMW
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Drives: 335i coupe
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1994 530i  [4.25]
2007 335i Coupe  [4.07]
Well there you go....so basically lifetime is BMW's decision, not ZF's...and officially there is no approved substitute for lifeguardfluid6, and the use of any other fluid would void the transmission warranty.

But after 4 years, and if you regularly change the fluid, the use of alternates is probably not an issue as long as you are going with something of similar quality.
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