Rear Diff breather leak after gear install
05-28-2009, 10:32 AM
#12
4th Gear Member
Thread Starter
Join Date: Jan 2006
Location: NY
Posts: 1,061
Mine has been seeping since I had the 410's and trutrac installed over a year ago. I plan to swap the fluid this weekend with some amsoil 75w140 severe gear that arrived this week. We'll see how that works out... I don't think you have anything to worry about, the release is working as it should.
I actually PM'd moosestang about this many months ago after freaking out about it...
I actually PM'd moosestang about this many months ago after freaking out about it...
05-28-2009, 10:46 AM
#13
3rd Gear Member
Join Date: Jun 2008
Location: Texas
Posts: 542
Mine with 4.10's does leak a bit. Is there a wright up on changing the gear oil. I would appreciate any guidance, as I would like to change to Amsoil as well. Thanks!
Last edited by vasman; 05-28-2009 at 10:49 AM.
05-29-2009, 04:03 PM
#14
4th Gear Member
Thread Starter
Join Date: Jan 2006
Location: NY
Posts: 1,061
so i got underneith it yesterday and saw a good sized puddle under the axle ... and it hasnt been driven since last weekend. How long should this be leaking out if its an overfill issue ??
also, how can this continue to be normal ? If it keeps leaking out, wont there be not enough gear oil in the rear end ???
also, how can this continue to be normal ? If it keeps leaking out, wont there be not enough gear oil in the rear end ???
05-30-2009, 01:22 AM
#15
5th Gear Member
Join Date: May 2007
Location: Central Texas
Posts: 2,388
If nearly 3 quarts were put in, that is definitely overfilled!
Take out the front drain plug and let the excess run out. The top of the fluid is supposed to be about 1/2" below the fill hole, and not full up to it.
But the vent is doing what it is supposed to do.
Take out the front drain plug and let the excess run out. The top of the fluid is supposed to be about 1/2" below the fill hole, and not full up to it.
But the vent is doing what it is supposed to do.
07-07-2009, 01:32 PM
#17
3rd Gear Member
Join Date: Dec 2006
Location: Colorado
Posts: 944
3 Quarts=96 ounces wow..... let some out.....
07-07-2009, 03:45 PM
#19
You guys know the V8 S197 calls for a heavier Fluid right?
its not 75w90
the mustang calls for synthetic only
also it takes a heavier lube than your truck
it uses the 3rd one down
http://www.amsoil.com/a/synthetic-gear-oil?zo=1667299
its not 75w90
the mustang calls for synthetic only
also it takes a heavier lube than your truck
it uses the 3rd one down
http://www.amsoil.com/a/synthetic-gear-oil?zo=1667299
Last edited by ShadyNinja; 07-08-2009 at 02:38 PM.
07-07-2009, 04:35 PM
#20
3rd Gear Member
Join Date: Dec 2006
Location: Colorado
Posts: 944
I would just remove the fill plug and see if it drains out there. If it's over filled, fluid will come out of the fill plug. That should be sufficient. I filled mine to the bottom of the fill plug with Royal Purple 75W-140.