And I see many different fluid recommendations. Vehicle is an 04 Ram 1500 4WD. It has 100,000 miles, and we don't tow or race it, but I want good stuff in there so it lasts a long time. Top of the lines fluids like Amsoil or Royal Purple are not out of the question.
The question I do have, is what kind of fluids can I use? Can I use synthetic in all 3 units? Can I use the same weight in all 3 units? What weight should I use? Does the rear take friction modifier?
Thank you guys, I'm a muscle car guy and new to trucks.
Are you the original owner? Have all 100K miles been with conventional lubricants?
Both choice you've listed (Amsoil & RP) seem to be excellent lubricants...and there are others as well - also these lubricants should exceed the standard IMO...
Thanks, no we are the third owners. Each previous owner owned it for 50k miles, and I have no idea what maintenance they did. The guy I bought it from (second owner) definitely wasn't a car/truck guy; he had Fram filters on it and stated he had washed the truck maybe twice. So yeah, I'm just knocking everything out, better to know it's done than assume.
OK next question.....how do I know if it's got the 3.92s? Maybe I'll just take it on a back road and rip a few burnouts and see if it lays two stripes.
My 3rd gen came with 3.92 gears, and without limited slip. I plan to go with the Eaton Tru Trac locker with 4.56 Motion gears.
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