Quote:
Originally Posted by jtgraham
Has anyone put fluids other than the GM recommended ones. I see Royal Purple has a ATF that they say is better and they make rear diff gear oil as well.
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Considering you could drain all the oil out of your transmission and drive it around the block with no problems, the "differences" you're going to find in different fluids is going to be very minimal. You're going to read about people switching to a different fluid and now it's better but it's going to be on a level of it was a 8/10 before and now it's a 9/10. Any ATF you use will work fine. All of them are rated for temperatures that are far beyond what your transmission is going to heat up to. They all have detergents to help wet clutch life that your transmission doesn't have in it. I would bet money you could fill it with diesel instead of atf and the car would drive the same.
Fun fact on that is when i was in Cummins training when i worked at dodge i found out you can run diesel engines on ATF you just need to run about 10% diesel in the ATF because ATF alone wont lubricate the injectors enough.