Leaking gear oil
2nd Gear Member
Joined: Sep 2008
Posts: 312
From: Connecticut
The lack of friction modifier won't affect the gears, it affects the clutch packs in the differential. The gasket is not the problem with the leak considering its leaking from the load cap bolts in the center of the cover. Permatex makes a tube of thread sealer which will be farm more effective than using any type of teflon tape on those threads. Its called Permatex Thread sealer and its in a white tube should be next to all the other RTVs at the auto store.
TECH SAVANT
Joined: Dec 2006
Posts: 10,937
From: Saint Augustine, FL
At the risk of being once again chastised for providing background info--friction modifier is an additive to make the oil more "slippery" by reducing the surface friction of mating components.
In our LSDs it keep the clutch plates from binding, and popping and chattering. Years ago we used less or none as a cheap way of making clutch type LSDs lock up better--at the expense of friction plate wear...
In our LSDs it keep the clutch plates from binding, and popping and chattering. Years ago we used less or none as a cheap way of making clutch type LSDs lock up better--at the expense of friction plate wear...
5th Gear Member
Joined: Mar 2008
Posts: 2,312
From: NJ
4th Gear Member
Joined: Mar 2009
Posts: 1,909
From: NC
my rear end is sealed better now by myself then it was by the last shop that touched it.
all I used was rtv.... no gasket at all.
I stand by my original statement though. If it is leaking through the bolts then you are not making your seal correct. Gear oil should never make it that far out of the differential.
all I used was rtv.... no gasket at all.
I stand by my original statement though. If it is leaking through the bolts then you are not making your seal correct. Gear oil should never make it that far out of the differential.
Chupacabra
Joined: Jul 2004
Posts: 9,621
From: wilkes-barre PA
I stand by my original statement though. If it is leaking through the bolts then you are not making your seal correct. Gear oil should never make it that far out of the differential.
TECH SAVANT
Joined: Dec 2006
Posts: 10,937
From: Saint Augustine, FL
Niner you and a few others are getting confused on which bolts he is talking about, heres is a picture of the load bolts hes talking about they are no where near the gasket or the mating surfance to the rear end housing. I would use RTV thread sealant on the threads of those load bolts and you should be fine.
TECH SAVANT
Joined: Dec 2006
Posts: 10,937
From: Saint Augustine, FL
This "makes" the heavy duty cover part of the carrier support/housing assembly, not just a cover to keep the oil in...
Chupacabra
Joined: Jul 2004
Posts: 9,621
From: wilkes-barre PA
They apply load to the differential carrier bearing caps, which can be a weak link when you really start pushing an 8.8" rear end--either with a bunch or power, and/or because of very high (numerically high) ring and pinion ratios.
This "makes" the heavy duty cover part of the carrier support/housing assembly, not just a cover to keep the oil in...
This "makes" the heavy duty cover part of the carrier support/housing assembly, not just a cover to keep the oil in...