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Ford Performance Friction Modifier (79-14 All)

Item 50377
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    Features, Video & Details

    • Perfect for Gear Swaps
    • Reduces Gear Whine and Chatter
    • 3.8 fl oz Bottle
    • For All 1979 to 2014 Mustangs

    Review & Installation Video

    Review & Install Video

    Perfect For Gear Swaps. Ford Racing's Friction Modifier is a specially formulated additive to provide smooth operation of clutch-type limited-slip differentials, perfect for gear swaps.

    Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures years of hassle-free use.

    Application.
    Ford Racing Friction Modifier is recommended for use in 1979 to 2014 Mustangs and is compatible with other brands of gear oil. One bottle is required for rear ends equipped with Ford traction-lock units.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    MPN# M-19546-A12

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) 3.8 fluid oz bottle
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • Bullitt - 01, 08, 09
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95, 00
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
    • GT500 - 07, 08, 09, 10, 11, 12, 13, 14
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14

        Questions & Answers (8)

        5 Top Rated Questions

        I have a 2014 GT premium 5.0 with an automatic. Would you recommend the use of this product when changing the gear oil? Thank you.

        • We do recommend using friction modifier when changing your Mustangs ger oil!

        Helpful (7)

        Can i add this to my car without having done a gear change or replacing the gear oil

        • I would not recommend adding Ford Performance Friction Modifier unless you are changing your gear oil, it is added in as a ratio with gear oil.

        Helpful (2)

        Application I've scoured the internet looking for recommended methods of application and found nothing. Do I apply this gear by gear with a brush or do I just toss this in at the same time with the diff fluid?

        • It's designed to be poured directly in to transaxle case using a limited slip differential also referred to as a "Posi" meaning both wheels spin when power is applied. I would suggest pour entire bottle in first then pumping in your new fluid fill just below the fill hole plug. Check your year and model for specfication on filling level and fluid requirements. You may notice a faint noise from the differential for a few days until the new fluid and additive impregnate the clutch pads and it will go away nothing to worry about.

        Helpful (2) Show 1 more answer

        2007 GT 8.8 Rear axle My problem: only one wheel spins in high throttle. The clutch slips. Is this a thing that prevents clutch slip? Or is it only the noise that is reduced?

        • Unfortunately Ford Performance Friction Modifier is used to provide additional lubrication to the gears in the differential, however it would not prevent clutch slip. Clutch slip is usually the result of the clutch and flywheel unable to transfer torque to the drive-train. The only solution would be to replace the clutch and flywheel in most cases. Feel free to give our customer service department a call if you have any additional questions!

        Helpful (1)

        This friction modifier is good just for differentials or you can add when you change gear oil in gear box to

        Post Your Question
        3 More Questions
        Hello I have smal gear whine between 40-60 mls help this product? maybe 2 bottles 1 answer
        Is friction modifier good for a manual transmission gear box? 1 answer
        do i need to use this stuff i swapped gears about 1 year ago and used friction modifier.....i want to change rear end fluid now...do i need to use the friction modifier ??? thanks 1 answer

          Customer Reviews (77) Write a Review

          Overall Rating 4.8

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Performance Gain 4.486486 4.5
          • Fit 4.864865 4.9



          • 5/5

            Installation Time: Afternoon

            October 26, 2019

            Needed for install

            Needed for gear install ..........................................

            Trigr1

            Year: 1993 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            August 20, 2019

            Great product

            Works as it should no problems. What can you really say about it.

            ChristopherS

            Year: 2007 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            August 19, 2019

            Works as advertised

            Works great. It helped quiet down my rear differential

            Nelly90210

            Year: 2016 Submodel: EcoBoost

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            May 23, 2019

            Ford Friction Modifier

            Worked as it is supposed to. I'm glad AM has products to not only make our mustangs look and perform better, but to keep them maintained and running top notch.

            jestar06

            Year: 2007 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            May 22, 2019

            best friction modifier

            Excellent product, no noise coming from the rear end after using this and all at a great price too.

            AnthonyT

            Year: 1989 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 13, 2019

            Must have!

            This is a must have to keep your rear differential in good shape. Make sure the fluid you run does not have it already added.

            MPNYC

            Year: 2013 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 09, 2019

            Additional friction modifier

            This really smoothes up the rear, add even when using a gear oil that has a modifier in it.

            Jacob

            Year: 2013 Submodel: GT500

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 09, 2019

            Amazing

            This friction modifier is the bomb! Mix with a little Astroglide and you're set!

            CrazyCooter

            Year: 2014 Submodel: V6

            Helpful (1)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            April 23, 2019

            Friction Modifier

            It was rad you guys got it for me quickly, even while out of stock , thank you! Oh , and I gained 100 horsepower! Lol

            ZacharyS

            Year: 2014 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 23, 2019

            Must have

            You need this if you get the clutch and shim rebuild for your rear end to soak the carbon fiber clutch disks!

            ChaseG

            Year: 2013 Submodel: GT

            Helpful (0)

          • 5/5

            March 25, 2019

            Recommended? Yes. Works? Yes!

            This lube additive is supposed to let a differential work without making a bunch of noise from what I read. Okay, I used it and guess what? No crazy noises!

            TheRAP

            Year: 2007 Submodel: V6

            Helpful (0)

          • 4/5

            March 24, 2019

            Best price on the internet!

            Bought a gasket, gear oil and the Ford Performance Friction Modifier for the best combined at American Muscle

            TeamUgly

            Year: 1996 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            March 23, 2019

            Does what it should

            Works good and does what it should. C any go wrong with Ford performance friction Mod.

            Swoopty5525

            Year: 2007 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            March 18, 2019

            GREAT ADDITIVE

            Great product for all semi-posi's and positraction rear gears. Ford racing lubes work perfect

            MichaelP

            Year: 2013 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            March 08, 2019

            Best friction modifier

            The best friction modifier on the market today. Let clutch packs soak overnight smells horrible but works the best .

            Lurch904

            Year: 2007 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            February 11, 2019

            Must use!

            A Must for Posi trac type rear axels. Use only the manufacturer's name brand posi additive. Others may not perform as well. Install additive before the remainder of the rear end grease, to insure that you have room for it.

            Fordman

            Year: 2006 Submodel: GT

            Helpful (1)

          • 5/5

            January 25, 2019

            Great product

            I needed it for my gear swap, local speed shops were charging $30 for this

            Drew

            Year: 2005 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            January 16, 2019

            Great stuff

            Bought on sale at a great price,shipped fast and works well..

            mustangdave

            Year: 2002 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            January 16, 2019

            gear oil

            This has been helping me to get off the line with both wheels pushing my limited slip rear end. great product and fast shipping.

            toby

            Year: 1995 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            January 04, 2019

            Friction Modifer FP

            I highly recommend purchasing this along with your diff. Fluid! Great product!

            BradleyL

            Year: 2007 Submodel: GT

            Helpful (2)

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