04 150 diff clatter anyone?
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Junior User
Joined: Oct 2004
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From: Georgia
04 150 diff clatter anyone?
anyone getting any thumping, clunking, or clatter from their rear diff on their new f-150? I got rid of all diff probs by switching to Amsoil syn fluid. It is amazing what a fluid can do..
after my post I see there are many with this prob, I had to fight ford to remove there subpar fluid from my rear diff, Im telling ya, if you want a smooooooth rear diff go severe gear Amsoil 75-90, This is not an advertisment for amsoil, I was so fed up with the clunking and thumping and ford not wanting to install my fluid telling me it would void my warranty. (Bologny), they replaced my rear chunk which did nothing. the shear stability in the amsoil fluid is just what the diff ordered. ford finally saw it my way and installed my fluid, these trucks should come from the factory with the Amsoil in the diff.
As another poster said: wake up Ford...
after my post I see there are many with this prob, I had to fight ford to remove there subpar fluid from my rear diff, Im telling ya, if you want a smooooooth rear diff go severe gear Amsoil 75-90, This is not an advertisment for amsoil, I was so fed up with the clunking and thumping and ford not wanting to install my fluid telling me it would void my warranty. (Bologny), they replaced my rear chunk which did nothing. the shear stability in the amsoil fluid is just what the diff ordered. ford finally saw it my way and installed my fluid, these trucks should come from the factory with the Amsoil in the diff.
As another poster said: wake up Ford...
Last edited by plumbguy; Jan 12, 2006 at 06:29 AM.
Thread Starter
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Junior User
Joined: Oct 2004
Posts: 83
Likes: 0
From: Georgia
syn diff fluid
I'm guessing Amsoil knows alot more about lubrication than ford, I'm certain that the "shear stability" is light years beyond motorcraft oil. the molicules in the ford diff fluid cant hold up to the pressures that the amsoil can. and yes the weight is the correct weight. the molicules in the amsoil fluid are not sheared in half and broken down like the crisco that ford uses. If you install the amsoil fluid you will
be extremely happy,pleased, and suprised. It made me like my truck again. if you are waiting on ford to correct the problem you'll have a long wait. I have been using amsoil products for years and they are excellent. when you try to explain shear stability, flash point, film strength and all the oil tech stuff to someone at ford you might as well be talkin chinese. the amsoil fluid not only will resist molicule shear but the film can be streched much thinner and still surpass any dino oil in lubrication. try it and you will be amazed, plus your chunk will last longer. I like to pass on problem solving solutions, dont be scared to give your diff a drink of Amsoil
be extremely happy,pleased, and suprised. It made me like my truck again. if you are waiting on ford to correct the problem you'll have a long wait. I have been using amsoil products for years and they are excellent. when you try to explain shear stability, flash point, film strength and all the oil tech stuff to someone at ford you might as well be talkin chinese. the amsoil fluid not only will resist molicule shear but the film can be streched much thinner and still surpass any dino oil in lubrication. try it and you will be amazed, plus your chunk will last longer. I like to pass on problem solving solutions, dont be scared to give your diff a drink of Amsoil
Last edited by plumbguy; Jan 12, 2006 at 07:19 PM.
