We’ve track-tested Super F™ to be highly effective in Powerglides, Turbo-Hydro 350 and 400, Torqueflite 727 and 904, as well as Ford C-4 and C-6 automatics. Super F is great for any non-electric transmission. There are a multitude of reasons why Super F synthetic ATF is the BEST fluid for your automatic transmissions. Super F can also be used in high performance street applications, and is excellent for towing use. It can be mixed with petroleum-based ATF without harm, but obviously the higher the percentage of Super F in the mix, the better the performance and reliability will be. Recommended for use in GM Powerglide, TH350, TH400, Chrysler TF727, TF904, Ford C4, C6, and other high performance non-electronic transmissions.