Hey Jeepers! Alright, having issues with the gear oil recommendations! I have a 2012 JKU Manual, D30 in front, D44 in rear. I do NOT Tow but I am lifted and running 35s. Looking to change diff fluid, Jeep Manual states 80W-90 Front, 80W-90 Rear unless towing then use 75W-140. Im wanting a FULL Synthetic, all i can find in a Full Synthetic is a 75W-90, is that ok? Also i stated i do not tow but are the 35s, steel bumpers, alum fenders, **extra weight considered "towing"?? As you can tell im a bit confused as to what i should fill with, any advice, opinion, or help is always greatly appreciated!