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Limited slip additive for trutrac?

Old 05-25-2012, 09:08 AM
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Default Limited slip additive for trutrac?

Do I need to put limited slip additive in with the gear oil for my trutrac in my 9" or just straight 80/90 gear oil?
Old 05-25-2012, 12:06 PM
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Friction modifiers are not needed in helical gear differentials. The only time you need them is if the differential uses clutches. Just use gear oil.
Old 05-25-2012, 12:37 PM
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Don't need it for gear driven posis.


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