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Old Wed, May 26th, 2010, 02:55 AM
hayjayhorses hayjayhorses is offline
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Join Date: Dec 2009
Location: Palmer, Mass. Hudson, Colo. Lantana, Fla.
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Quote:
Originally Posted by epowers777 View Post
Do I need to get friction modifier for my rear dually axle and my front axle they say dana on the caps
Only if you have a limited slip or locking differential in the rear. Very unlikely you have a locker in the front. To tell if have a limited slip, jack up your truck so both wheels are off the ground, put in neutral, and spin on wheel if the other wheel spins the same way, you have a limited slip differential, add friction modifier

If the wheel spins the opposite direction, you have an open differential, no friction modifier needed.
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