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Author
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Topic: Ford friction modifier
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mustang68mustangs
Gearhead Posts: 470
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 06-19-2002 10:14 PM
 
Is it a good idea to add the Ford friction modifier additive to my 9" trac-loc rearend?
What does it do?
I just had a set of 3:89 richmond gears setup in my rebuilt trac-loc.I love doing the 2 wheel peel! Now I just gotta get the thing to hook up.
I'll be needing some help on that real soon.
Bob
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mustang68mustangs
Gearhead Posts: 470
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 06-20-2002 09:17 AM
Anyone? I know you guys gotta have a thought on this.
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Just Strokin
Gearhead Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 06-20-2002 09:20 AM
Did you check the bottle of gear lube to see if it is for clutch type locking rear ends? If it was, the additional friction modifier is not needed or so I have found.I am not sure what would happen if you have too much friction modifier.
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Bloose
Gearhead Posts: 888
From: Milwaukee, WI
Registered: Dec 2001
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posted 06-20-2002 10:43 AM
Yes you want to run the friction modifier. It allows the clutches to slip smoothly and not bind. I have never tryed to run my Track Lok in my Jeep without it but if I go to long between gear lube changes they will start to bind.I think it is the best insurance for a long lasting LSD. B-loose
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Ken
Gearhead Posts: 4964
From: Prospect, Ct. M&M Member No. 31 MCA Member 49299
Registered: Jun 99
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posted 06-20-2002 11:09 AM
Additive Friction Modifier by Motorcraft...Its intended for use on limited slip differentials to reduce hypoid gear noise levels.------------------
Conciousness - that annoying time between naps. Ken
1965 Springtime Yellow Coupe - 302GT40-4spd
Edlebrock RPM Air Gap - 670cfm Holley Street Avenger
and much, MUCH MORE !!!
My 1965 (aka RUMBLE BEE) Photo Page
1995 5.0 Laser Red - 5spd - Coupe
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mustang68mustangs
Gearhead Posts: 470
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 06-20-2002 04:14 PM
Thanks fellas, I used penzoil high performance gear oil.It says it is for high heat, high horsepower and limited slip differentials so I dont think I will need to add the Friction modifier.
Bob
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Ken
Gearhead Posts: 4964
From: Prospect, Ct. M&M Member No. 31 MCA Member 49299
Registered: Jun 99
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posted 06-20-2002 04:44 PM
I would use it anyways...it only cost a couple of dollars...  ------------------
Conciousness - that annoying time between naps. Ken
1965 Springtime Yellow Coupe - 302GT40-4spd
Edlebrock RPM Air Gap - 670cfm Holley Street Avenger
and much, MUCH MORE !!!
My 1965 (aka RUMBLE BEE) Photo Page
1995 5.0 Laser Red - 5spd - Coupe
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mustang68mustangs
Gearhead Posts: 470
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 06-20-2002 04:56 PM
I couldnt hear my gear noise over my noisy *** fuel pump or the 3 1/2" exhaust anyway!
Thanks for the answer to my question.
Bob 
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SteveLaRiviere
Administrator Posts: 48752
From: Saco, Maine
Registered: May 99
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posted 06-20-2002 06:08 PM
It's intended to minimize the clutches grabbing and 'chattering' during a turn. You should use one bottle for a street rear end. ------------------
'70 Mustang Mach 1, '72 Mustang Sprint, '94 F-150
MCA Member # 47773
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Buster
Gearhead Posts: 1821
From: Hurricane alley
Registered: May 2002
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posted 06-20-2002 08:01 PM
The MotorCraft friction modifier smells real good too, yuk.A friend of mind runs a Corvette shop and Corvettes have a real big problem with chattering rear ends, more so then Ford 8.8" rears. The T-Bird independent rears also have a chattering problem. If you have a chattering problem, he suggests using synthetic gear oil and the friction modifier. I think Ford has a TSB saying the same thing too. I have tried this on the 8.8" Birds and it worked on most of them. My suggestion is go by the feel and noise... You will know if you have a problem. With all of the 8.8 rears I have done, none have had a problem using the MotorCraft brand modifier.
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