I've been searching threds for the correct gear oil and additive amount for my truck.If this is and old question I'm sorry for taking up space.I have an '03 2WD 1500 W/3.55 LSD gear.I really want to change the oil this weekend.Another question,synthetic or not?Could someone point me in the right direction.

 

synthetic. heres a link in the faq section. https://dodgeforum.com/forum/3rd-gen...gear-lube.html
you could also check the manual

 

+1 ^^^ also there are some synthetics that don't require the LS additive such as Royal Purple.

 

Thanks alot

 

75w-140. If you can afford it, get a PML (or similar) cover to increase the amount of oil, especially if you tow. ~2.2 qts of Mobil 1 and four ounces of additive if you keep the stock cover.

 

Yep. 75-140 of Mobile 1 here is about $19 a quart.

 

I'm using the same weight, but AMSOIL. Also, I don't need friction stuff with the LockRite...

 

I don't do any towing,just a daily driver.

 

Kevin, I don't tow much either, but the LockRite was a God-send this winter. It kept me from getting stuck 3 times, maybe more. I just threw 300# of sandbags in the bed and dropped the hammer as needed...