Quote:
Originally Posted by Sophisticated Redneck
Whoa easy there buddy, not sure whats up with the attitude but nothing "half-assed" about using Ravenol.
It meets and exceeds ZF's specs, it is not "mixing fluids" You know what is half-assed though? Not doing your homework and Telling him to to get the wrong damn fluid, had he listed to you he would have put in ZF6 fluid and smoked his transmission.
The fault is not with people but with BMW's jerk move of telling everyone the transmission fluid is "lifetime". ZF themselves tell you around 70-80K to change it. People of course dont know that and are just following BMW's crap advise which is nothing more then a marketing move.
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Ravenol?
First, coulda sworn OP was referencing a "Vaico" ATF. Seems one of the never ending "its german so must be good for German Car" products we see. Is Vaico= Ravenol? Or is the turner item I was finding for 289 different?
https://www.turnermotorsport.com/p-5...rvice-kit-8hp/
But importantly, we dont have zf6 nor zf8
complete specs, so how do you know that ravenol 'meets or exceeds'? Every tom dick and harry claims their ATF 'meets or exceeds'....but zf doesnt publish complete specs.....then you have the folks that think since ZF6 meets a Shell spec that any other ATF that meets that Shell spec therefore means it is equivalent to ZF6. (People that need to go back to 5th grade and study there Venn diagrams and word logic...) Yes, there are a TON of vendors and sites that claim fluids "meet the ZF spec". Doesnt make it true.
You want to mix fluids, go for it. It isnt a best practice. Simple as that. People do it. People run all sorts of fluids. Doesnt make it right.
FWIW: BMW stopped with the 'lifetime' claim on the x5 a few years ago. now 100k
Finally (robnitro) I did a 2x drain fill- but didnt wait a month in between, only a drive cycle to get it hot. why a month? Oh, on BITOG there does seem to be some scientific evidence around mercon and its equivalence... i havent spent the time researching, ZF fluid is cheap enough that it isnt worth it.