97 f250 diff oil

Reply Subscribe

Thread Tools

Search this Thread

Dec 12, 2017 | 06:44 AM

Zackyhorror

Thread Starter

New User

Joined: Nov 2017

Posts: 15

Likes: 0

97 f250 diff oil

Looking to change my front and rear diff fluids. Was wondering what weight I should be using and how much roughly? It's a 1997 5.8l f250. Thanks!

Dec 12, 2017 | 09:20 AM

Da_Lariat_Chariot

Laughing Gas

Joined: Feb 2015

Posts: 765

Likes: 1

Try 80W90 , check if you have LS clutches in both, if so you need to add a friction additive or you will roast the clutches. The capacity is however much you need to fill the case up to the drain plug, usually 2-3 quarts per axle.

Dec 12, 2017 | 12:21 PM

GoinBoarding

Cargo Master

Joined: Mar 2010

Posts: 3,330

Likes: 292

From: Laramie, WY

Sterling 10.25" will take more than an 8.8", I'd have 4qt on hand. 80w-90 for light duty but I always run 85w-140 conventional or 75w-140 synthetic. I'll take a little mpg hit over worn parts if hauling or towing.
http://www.dieselhub.com/maintenance/sterling-axle-fluid.html

Dec 12, 2017 | 09:47 PM

madpogue

Lead Driver

Joined: Oct 2003

Posts: 8,476

Likes: 37

From: Madison, WI

Um, you fill it up to the FILL plug. There is no drain plug, and if there were, it would be at the bottom.....

The synth 85w-140 should cover you for open or limited-slip. If you're not sure which diff you have, check the AXLE code on the door jamb. If it's a letter and a number, it's limited slip; if it's two numbers, it's open diff.

AFAIK, the factory never shipped a LS front axle in this generation of truck.