Bryan Roush Posted April 4, 2008 Report Share Posted April 4, 2008 Hello everyone i wanted to do some general maintenance on my truck. i saw mr p. post on how to fill, my question is that i would like to use royal purple but they only come in 85w140 and 75w90, can i use either of these in front differential and there tranny fluid is max atf, i believe i saw it and says it is good for dextron lll.just wanted to make sure thanks bryan. Quote Link to comment Share on other sites More sharing options...
Bryan Roush Posted April 4, 2008 Author Report Share Posted April 4, 2008 any ideas on the front diff fluid? I found the tranny fluid is for dextron lll. Quote Link to comment Share on other sites More sharing options...
6.0vortech Posted April 5, 2008 Report Share Posted April 5, 2008 Use the royal Purple 75 90 Max Gear fluid on the front & rear diffs I had to buy six quarts to get them all complety full Quote Link to comment Share on other sites More sharing options...
Bryan Roush Posted April 5, 2008 Author Report Share Posted April 5, 2008 Thanks, I talked to MR.P and he told me the same thing. I ordered 6qts from Thunderracing yesterday. Quote Link to comment Share on other sites More sharing options...
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