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Old November 12th, 2003, 11:22 AM
rover4x4's Avatar
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1995 SW #487/500
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Mobil 1 in the diff's

okay so was gonna finish with the synthetics and the Mobil 1 syn is only availible in 75wght gear oil. I am not 100% sure if the book calls for 80 or 90? at any rate would it be okay to use the 75wght in the diffs and case or should i stick with what the book suggests?

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Old November 12th, 2003, 11:51 AM
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Mike Hippert
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94 D-90 Grinding Rover
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I use Mobile One 75wt in the Diffs for the last year with no problems, and I put it in the new T-case when I installed it before Laborday. I can shift the T-case without the 90 having to be rolling, infact it goes in and out very easy and never makes any noise. Oh and NO leaks either.

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Old November 14th, 2003, 10:48 PM
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Keith Kreutzer
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As much as I love synthetic oils I feel that I should at least mention that if you are intent on spending much time in water you might think twice about these oils in a diff... After one trip under water I check my oil after a season spending "some time" in water I just change it... Cheap insurance... Amortize the life of the syn oil VS. the cost of regular old 90wt and it's a pricey proposal... Good for a good meal anyway


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