OK I did transmission fluid flush on my 02 4.4i

[JCL]

Originally Posted by kablammo

I will be using Red Line D4 ATF when I do my trans serivce. All my other cars take D4 ATF and I've been really happy with Red Line Products.

Red Line Synthetic Oil - Automatic Transmission Fluids - D4 ATF

k

Do all your other cars call for the Esso LT spec fluid?

My only issue with the D4 is that it is a generic fluid claimed to be suitable for all automatics (Dexron, Esso LT, Ford Mercon, Honda ATF, etc) and also used as a gear lube in transaxles. It isn't certified to any of those standards, that is just Red Line's marketing claim.

I think that the reason there are different specs is because different fluids are optimized for each different application. ZF, GM, and Ford even use different fluids in different designs of their own transmissions. Using one fluid in all of those applications (including using D4 as a gear lube) seems a pretty low-tech approach. Just my $0.02