Best Gear Oil For Jeep Differential

What is the best differential fluid to use in my tj i run amsoil in my cummins that sees a lot of highway miles but my jeep that gets the gear oil changed every other trip due to the mud you can t avoid in the south gets the cheap stuff you buy by the gallon at the parts store.

Best gear oil for jeep differential. I am about to regear soon and will be picking up some gear oil. It provides the balanced fluidity for easy switching in cold climates. Here s a helpful hint. Changing jeep jk differential fluid.

For hp diffs if your lucky enough to have them the best is the cheapest dino gear oil 85w 140 the best protection your diff can have it has been proven that synthetic gear oil is not the best choice for your diffs and yes i know almost all vehicles now have it from the factory but you also have very low drain intervals the 1 reason for synthetic gear oil use is mpg s and that is it you will loose some mpg s with dino gear oil but your diff will be better protected. There are two types of differential oils that are suitable for jeep vehicles namely royal purple pennzoil valvoline and amsoil. According to jeep the gear oil in smokey s front and rear differentials should be changed about every 15 000 miles based on the heavy driving maintenance schedule. Mt 90 secures the necessary friction for most synchronizers of mechanical gearboxes compared to many other synthetic fluids that are too slippery.

May 26 2015 tip how to differential fluid fluid changes gears jeep jeep jk mobil 1 cary. In an effort to keep things simpler and less costly i would rather buy 4 quarts of one oil for both diffs instead of 3 quarts for the rear and 2 quarts for the front. The oil belongs to the best gear oil for differential category and ensures excellent protection for the gears and synchronizers. As with any other fluids refer to your jeep owner s manual for the recommended gear oil viscosity.

The jeep forum states that you can use royal purple 90 for the front differential and 140 for the rear. Also mt 90 is safe for brass synchronizers since it does not contain active sulfur. I tow a 1300lb boat trailer so i was planning on 75w140 in the rear. Unless your vehicle only leaves the garage for a weekly sunday.

I own a 2012 jk rubicon with both front and rear dana 44 axles and the recommended gear oil is 80w 90. Jeep jk rubicon front dana 44 2 70 pints 1 35 quarts. We have the gear oil that s right for every application including limited slip units.