Quote:
Originally Posted by ksalih
Correct, however checking the fluid while running I believe is to ensure the fluid is @ temp. However, letting it run and going through the gears should give the same effect, thus rendering the idea to keep the engine running unnecessary. I could be wrong?
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Yeah it needs to be running. Here is the DIY for my 325, but again check for your 335.
"10) After about 8 minutes (you do not have to shift through the gears all this time), with the car still running, I placed my hand on the transmission pan, it was warm therefore it should be between 86 -122 degrees F. I opened up the fill hole and no oil was coming out."
http://www.e90post.com/forums/showthread.php?t=367729