75-90 or 75-140?
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Joined: Dec 2010
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From: North Hollywood, CA
75-90 or 75-140?
Coming from a 2wd 1500 I used Mobil1 75-140 since it called for it and the 2500 calls for 75-90...
Not really a problem to switch but I would think the thicker the better? and I have 6qts of the stuff at home not used... No receipt...
Being I live in California, Light to moderate off road 2 or 3 times a month, highway and very light towing (family boat) wouldn't 75-140 work?!?!
What do you put in your front and rear diff?
Not really a problem to switch but I would think the thicker the better? and I have 6qts of the stuff at home not used... No receipt...
Being I live in California, Light to moderate off road 2 or 3 times a month, highway and very light towing (family boat) wouldn't 75-140 work?!?!
What do you put in your front and rear diff?
Advocate of getting the ban button used on him...
Joined: Aug 2005
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From: Live Oak Texas
75 - 140 will be fine. It is used more by people that tow real heavy. I run the 75-90 front and rear. I don't tow heavy but I do have higher temps in the summer time but don't have any issues.
DTR 1st Sergeant
Joined: Apr 2007
Posts: 5,530
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From: Applegate, CA
it is not going to be a problem. Normally only the folks that tow heavy in hot climates use it. I would typically say just use the 90w if you were buying it, but since you need to use the 140w up, put it in and don't look back.
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Joined: Dec 2010
Posts: 105
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From: North Hollywood, CA
Checked the price of the 75-140 (17.99 @ pep boys) quick chat with the manager was able to return the 6 bottles n get the 75-90 8qt at that and some change in my pocket.
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From: Live Oak Texas
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