"bottle of posi additive"???

BowTie Eater 5 Liter · 02-14-2002, 01:32 AM

what is this stuff, and can i put it in my rear end to help out my posi unit???

chris91LX · 02-14-2002, 01:46 AM

You talking about the friction modifier or some kind of miracle oil?

WADS56 · 02-14-2002, 01:49 AM

You can find it in the parts store near the demagnatizing spray

BowTie Eater 5 Liter · 02-14-2002, 10:47 AM

HAHA!!
well, ok, there was a guy on e-bay that said that stuff came with his diff, and i thought id see if there was such stuff.

oh well, i guwss ill still need a new diff afterall

David Fulford · 02-14-2002, 10:48 AM

If you ever change your gear oil, you should put a bottle of it in your rear end.

Unit 5302 · 02-14-2002, 12:47 PM

Most high quality rear end oils come with differential friction modifier added to them already. Take a look on the bottle, it should say for use with limited slip rear differentials, or friction modifier added.

fiveohpatrol · 02-14-2002, 04:18 PM

So are you saying your only able to spin one wheel most of the time?

You can get a trac lok rebuild kit for like $60-70. It comes with new clutches, steels, shims and a bottle of friction modifier.

I've heard the friction modifier actually hurts the diff's ability to "lock up" it supposedly lenghtens the life of it.

I put one of these rebuild kits in over the summer (mine was one-leggin it too) and it made an amazing difference. Before I could never get both wheels to spin while turning to the right and punching it, after I could do complete donuts to the left AND right.

gtsr515 · 02-14-2002, 06:40 PM

Gentlemen! Friction Modifier is added to limited - slip rearends for one reason only....to help them slip. You take it from there.

srv1 · 02-14-2002, 07:05 PM

Quote:

Originally posted by gtsr515
Gentlemen! Friction Modifier is added to limited - slip rearends for one reason only....to help them slip. You take it from there.

he's right! if you dont use any gear oil with any modifier, thee clutches will stick together making chattering and and weird clunking noises when you turn, acting somewhat as if you have a spool in there. most gear oils do have the modifier in them.

Rev · 02-14-2002, 07:16 PM

I had to add it to mine after it was rebuilt. At first I just put in Mobil1 synthetic gear oil but it chattered and clunked every corner. Was driving me crazy (er?). I got the friction modifier at the local Ford dealer and it fixed all that chattering and clunking almost immediately after I added it and went around a few corners.

Rev

Coupe5oh · 02-14-2002, 08:39 PM

Ok fellas, I just freshend up the gear oil in my trak lok, a month ago, i also added some "posi trac" additive, I then put on some e.t. streets and went to the track, me, and my friend both noticed how i was smoking both of them in the waterbox, maybe it was coincedence, but they both spun until i let it start rolling then one would let go, but it seemed better, unless the SFC's helped?

Bad89stang · 02-16-2002, 03:08 AM

Just use Red Line gear oil. I believe it is 75W90. That's it. Your done. Smells like @#%* though. Just like all gear oil.

02-14-2002, 01:32 AM	#1
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	"bottle of posi additive"??? what is this stuff, and can i put it in my rear end to help out my posi unit??? __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

02-14-2002, 01:49 AM	#3
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	You can find it in the parts store near the demagnatizing spray __________________ 79 Hatch: NA 347, Stage 2 Canfield Heads, Victor JR. Intake, Blueprinted Holley 750 HP, Solid Roller Cam, Shooting for 10's on motor 93 LX: Tremec, dual friction clutch, fms flywheel, Hedman shorties, O/R H-pipe Ricer hater's club member #49

02-14-2002, 10:47 AM	#4
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	HAHA!! well, ok, there was a guy on e-bay that said that stuff came with his diff, and i thought id see if there was such stuff. oh well, i guwss ill still need a new diff afterall __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

02-14-2002, 10:48 AM	#5
David Fulford Registered Member Join Date: Oct 2000 Location: Charlotte NC Posts: 193	If you ever change your gear oil, you should put a bottle of it in your rear end. __________________ 1969 fast back; yellow; weld wheels; 302 roller with GT-40 heads; 3:55 gears; 5spd T-5; MSD 6AL; E-303; flows; Hedman headers; Holley 600;Weiand Accelerator;1.6 rockers

02-14-2002, 04:18 PM	#7
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	So are you saying your only able to spin one wheel most of the time? You can get a trac lok rebuild kit for like $60-70. It comes with new clutches, steels, shims and a bottle of friction modifier. I've heard the friction modifier actually hurts the diff's ability to "lock up" it supposedly lenghtens the life of it. I put one of these rebuild kits in over the summer (mine was one-leggin it too) and it made an amazing difference. Before I could never get both wheels to spin while turning to the right and punching it, after I could do complete donuts to the left AND right. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

02-14-2002, 01:46 AM	#2
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	You talking about the friction modifier or some kind of miracle oil?

02-14-2002, 12:47 PM	#6
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Most high quality rear end oils come with differential friction modifier added to them already. Take a look on the bottle, it should say for use with limited slip rear differentials, or friction modifier added.

02-14-2002, 06:40 PM	#8
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	Gentlemen! Friction Modifier is added to limited - slip rearends for one reason only....to help them slip. You take it from there. __________________ Remember...2nd place is 1st place for losers!

02-14-2002, 07:16 PM	#10
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	I had to add it to mine after it was rebuilt. At first I just put in Mobil1 synthetic gear oil but it chattered and clunked every corner. Was driving me crazy (er?). I got the friction modifier at the local Ford dealer and it fixed all that chattering and clunking almost immediately after I added it and went around a few corners. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

02-14-2002, 08:39 PM	#11
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Ok fellas, I just freshend up the gear oil in my trak lok, a month ago, i also added some "posi trac" additive, I then put on some e.t. streets and went to the track, me, and my friend both noticed how i was smoking both of them in the waterbox, maybe it was coincedence, but they both spun until i let it start rolling then one would let go, but it seemed better, unless the SFC's helped? __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

02-16-2002, 03:08 AM	#12
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	Just use Red Line Just use Red Line gear oil. I believe it is 75W90. That's it. Your done. Smells like @#%* though. Just like all gear oil. __________________ You're gonna need your seatbelt

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem with posi rear	dogfighter	Windsor Power	6	10-02-2004 03:56 PM
Auburn posi ???'s...please help	dragstang86	Windsor Power	6	10-08-2002 05:52 PM
Getting Posi?????????? Help	98GtPower	Stang Stories	6	08-24-2002 01:59 PM
eaton posi/ baer claw problems	DirtKing	Windsor Power	3	04-28-2002 11:04 AM
New Auburn Posi, noise when turning	bark3rd	Modular Madness	7	11-07-2001 05:17 PM