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Anyone use the RP max atf in place of ZF 8 and 9 speed fluid? Says on bottle it meets requirements of ZF transmissions. Noticed that FCA is very proud of the OEM fluid. As pricey as RP is its still cheaper and if it's safe to use its better than any SOPUS offering.

I have almost 500 miles on my 3.6L Pentastar. Should I wait to change the oil or change it now? Does Jeep use a break in oil?

Bought a 2023 Jeep Gladiator Rubicon. No longer have my 08 JKU. I'm a ways out from needing to do anything fluid wise to it. However, I really want to run the best in it even if it might be a little overkill. I'm looking at either Redline or Royal Purple. I do know the 850RE requires the Mopar 8...

Any harm in running Valvoline VR1 10w30 in a 3.8 Jeep JKU? Been running 5w30 Valvoline full synthetic since rebuilt motor. I change it every 3k anyways so being conventional doesn't bother me.

So I have replaced every seal on this motor other than the rear main. Luckily have stopped my leaks for now. Jeep runs really good and doesn't show signs of any major problems. The valve covers and heads were spotless. However, I noticed quite a bit of varnish on the upper case pan and around...