75w90 vs 75w140 RP

[Jayson Vagenas]

i need some opinons should i put the RP 75w90 or the 140 in the rear. also what about the front.

 

[shawn stonbraker 2]

I think it depends on if you have a normal or L/S in the rear. Your owner's manual will tell you the weights for the front.

 

[Johnny O]

My owner's manual specifies 75w-90 on one page and 75w-140 on the next, without any mention of limited-slip other than the additive. If you have limited-slip, I do, I run the 140 in the rear just to be safe. The front will take 75w-90.

 

[Todd Z]

FRONT 75/90



REAR if NON limited slip 75/90



REAR if LIMITED slip 75/140 AND A BOTTLE OF ADDITIVE !!!



Nuf said..

Todd Z

 

[Tom Schindler]

If you read the manual, it is clear on what type of lube you need. If you look at the manual, it will have a column that says "footnote". If you read down to the number the footnote refers to, it will say if you have a regular axle or a Traction-Lok. Depending on what axle you have will tell you which fluid to use.



If you do not have an owners manual, Ford has them available to download for free.





Tom