Diff Lube For A Locking Diff
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Joined: Jan 2003
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Diff Lube For A Locking Diff
I AM GOING TO CHANGE THE DIFF LUBE IN MY 97 F250 LKNG DIFF. IS 85W-140 NON- SYNTHETIC OK TO USE. ALSO DOES THE ADDITIVE HAVE TO BE THE ONE FORD SELL OR CAN I USE THE DIFF ADDIDTIVE FROM AN AUTO PTS STORE ADEQUATE. THANX IN ADVANCE
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Joined: Mar 2001
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From: So Cal
Diff Lube For A Locking Diff
Don't know for sure on your truck but seems like the weight lube you plan to use is a bit thick(high #). Any reason for that? Most use something like 75W-90. For towing and hot weather I might go with the 140 weight but usually would stay away unless it was an older model, or called out in the manual.
I use Stalube additive for my truck and car limited slips. Most people recommend 2 tubes on the truck or if synthetic is used. The Stalube tube says meets the applicable Ford and Chevy Specs.
I used Valvoline synthetic 75W90 and 2 tubes of Stalube.
Good Luck,
Jim Henderson
I use Stalube additive for my truck and car limited slips. Most people recommend 2 tubes on the truck or if synthetic is used. The Stalube tube says meets the applicable Ford and Chevy Specs.
I used Valvoline synthetic 75W90 and 2 tubes of Stalube.
Good Luck,
Jim Henderson
