Originally posted by Al:
Don't do the power flush. I have heard horror stries with flushes.
I reject that attack on the ATF service.
Please read my other posts on it.
1st it is not a "power flush" that is untechnical mistruth.
It is more less and infusion machine taking in old ATF through a cooler line and infusing it back into the return line. In order to maintain pressure without gyrator contact of the fluid it uses the same "rotating-squeezing-line-compression" type used in hospital style infuser machines
So there is no "FLUSHING" action. Some use some sort of solvent 1st, although you can request them not to use it.
2nd, the only "horror" stories you hear are 3 kinds of people:
The ones that had neglected transmissions from the get-go, ones that never had there pan filter replaced at service, or ones with a transmission ready to go anyway.
We have three vehicles in our family between 400,000+ miles. This service has been done with a PAN-FILTER change at around 30k intervals.
The fluid used was Amsoil Universal ATF.
Never ever had a horror story?
We always had the pan filter changed too.
The only AT failure we had was caused by an internal ATF-Radiator leak in which water contaminated the transmission causing it to fail.
If your transmssion is well maintained, this service will not cause it to fail.
All the ATF did was uncover a problem that already existed.
When in doubt 1st run Auto-RX, after the XXX miles drop the pan, replace filter. Run the ATF infuser machine drive XXX miles. Redrop the pan and refill to be careful.
Franks Auto-RX website also supports this strategy.
I think adding 4qts at time is an inefficient dilution process when infusers can knock out 90% of what is in there once and for all.