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Mickeyfan0805's avatar
Mickeyfan0805
Explorer
Jul 22, 2013

Adding ATF when you don't know what's in there

We had our transmission fluid flushed and replaced last spring and, being the non-mechanical idiot that I am, I didn't ask for detail as to what they filled it with. Since I didn't ask for synthetic,...
Tow Vehicles
RCMAN46's avatar
RCMAN46
Explorer
Jul 22, 2013
Dexron VI is not backward compatible for Allison 1000 prior to 2006. Transynd is best for all of the Allison 1000 transmissions. Your best bet is go with the owners manual and hope the proper fluid was used during the transmission service.

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