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On a 2011 Ford F250 with AOD transmission electronic limited slip do you need to add a friction modifier when changing the rear differential oil....thanks
it will have it if you need it, and it does no harm if you don’t need it.
once you buy gear oil in a squeeze bag, you will never buy gear oil in a regular container again.
and the cost is downright reasonable
this is what I used in our edge’s transfer PTU which calls for 75w-140 and my expedition that calls for the same. Neither require modifier, but it does no harm.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
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