Front Differential Fluid Flush Question!!!

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Dec 5, 2011 | 10:41 PM

theduke308

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Joined: Oct 2011

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From: WV

Front Differential Fluid Flush Question!!!

I am planning to use Mobile 1 75w-90 LS synthetic. It claims to have friction modifiers already in it, do I need to add more to this or will it
be fine?

2004 F150 5.4

Last edited by theduke308; Dec 5, 2011 at 10:46 PM.

Dec 5, 2011 | 11:04 PM

Turkey Hunter

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From: virginia

The front differential does not have limited slip and doesn't need friction modofier.

Dec 5, 2011 | 11:14 PM

theduke308

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From: WV

Will the stuff I mentioned above be alright for the front?

Dec 6, 2011 | 08:58 AM

rmp213

Ryan

Joined: Apr 2011

Posts: 1,208

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From: Winston-Salem, NC

If the rear is a limited slip, then so is the front. If it has friction modifier in it, and its the same weight as what's mentioned in your manual, you'll be fine with just that.

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