Hello:

I have a 95 540i e34 auto..130Kmiles. I'm experiencing upshift problems.. The problem seem to occurs when Im on the fwy and I go full throttle to Pass.The transmission kick down to a lower gear It stays in the lower gear. It doesnt upshift until I shift to "S4" then back to "AD".

I believe the tranny fluid is been in the tranny for the last 60K miles or so.. It is suppose to be lifetime fluid..

Any advice?