Quote:
Originally Posted by rule1110
The fluid and pan/filter were geniune ZF. The rubber seals and plug adapter were aftermarket. He said he has been using the aftermarket seals and adapters for a long time without issue.
When you serviced the e53 6hp26 did the 2-1 bump issue go away straight away or did it take some time? I was wondering if the transmission will take a bit of driving to adapter to the new fluid and seals?
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I'd have tried cheaper fluid before the ZF. Especially since they did not rebuild the valve body. Did they reset trans adaptations?
But to answer your second question. After servicing my 6hp26 with aftermarket seals, Valvoline Multi-Vehicle Synthetic ATF, and resetting trans adaptations, the 2-1 slam was gone immediately. And it was a severe slam, like getting hit from behind @ 10mph.