Motorcraft Additive Friction Modifier?? - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 02-08-2007
cp cp is offline
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Motorcraft Additive Friction Modifier??

Hi All,
What exactly is Additive Friction Modifier used for? It comes in a little 4oz. plastic bottle.

Thanks.
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Old 02-08-2007
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its used for your rear end if you have a clutch type limited slip diff.

EDIT: It helps keep your posi working.....

Last edited by greygooseranger; 02-08-2007 at 08:12 PM.
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Old 02-08-2007
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u dont need it if u change the lube to a synthetic with an additive already blended in
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Old 02-08-2007
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Quote:
Originally Posted by fddriver02
u dont need it if u change the lube to a synthetic with an additive already blended in
Yes this is true....
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  #5  
Old 02-08-2007
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i got it at the dealer and they new exactly what i was talking about . It was cheap i think.
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Old 02-08-2007
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if your running any SYN tech in your rear end its not need as they already said if its the old like 30-90 or whatever that crap is you gotta add it..alls i know is after awhile in that rear end it smells like a$$
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Old 02-09-2007
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I don't have a limited slip. I have an open 8.8 with a 4:10 ratio and it makes a whining noise around 40-50 mph. Would this additive help quiet the gears?

Thanks
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Old 02-09-2007
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My rear end makes that noise too. The friction modifier will not quiet your rear end. Time for a rebuild or an upgrade.
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Old 02-09-2007
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