How often do you or are you suppose to change the tranny and rear diff. fluids? Any good fluids to put back in? I was thinking Lucas. Thats what I have been using in the motor and fuel. I want good stuff, dont wanna half-***. Not worth it to me. My truck is a 03 4x4 dually. Is there anything else I should be checking or changing, other than the basics? This is my first diesel and my first 4x4. So any pointers are a great help.
should have all your answers in owners manual. my 04 says trans every 30k and rear diff 15k. lucas is good stuff. i just put all mopar fluids in mine. i get a discount on all genuine mopar parts and fluids so its cheaper than going to parts store.