Hey everyone, just bought a 1500 with 4x4 and 3.9 axles, changing diff fluid, accidently misread somewhere both diffs take the same fluid, i put 85w140 full synthetic with lsd in the front diff, will this do any harm or should i take it out and put the 75w90 in? The weather sucks right now and i dont think the red rtv will cure in 35 degree weather so if i can get away with not having to take it out that would be awesome, but if its going to harm the front diff then i am going to have to take it out. Thanks.

 

Leave it till better weather. It is a little heavier.