Rear end looks to be leaking
#1
Rear end looks to be leaking
It appears to be leaking around the center plate. How big of a pain is it to drain the fluid in the rear end and change that gasket. It's not a real back leak it's more like a seapage(sp). It doesn't leak so bad that it leave a puddle or drops on the ground just cover the center part of the rear axel. What typ of fluid goes back in and do I do anything besides replace that seal?
#2
It would help to know some additional details about your truck, but I'll make due. Changing the diff fluid is not a fun job in my book. It's not overly difficult, it's just something I don't look forward to with these trucks. You will need to unbolt the cover and be VERY careful when prying it off. It does not use a traditional gasket; it uses the form-a-gasket goo stuff. I actually bent my cover when I took it off. Running a razor blade along the mating surfaces may help when taking it off. Be careful not to gouge the diff housing mating surface though.
I would highly recommend getting an aftermarket Mag-Hytech cover for your truck. It's a little spendy, but well worth the money. IT uses an o-ring to seal the cover instead of the gasket goo. It also has a higher fluid capacity and a drain plug. The next time you have to change diff fluid, you'll thank yourself for buying one.
If you plan on reusing the stock cover, you will need to run a bead of the gasket goo stuff along either the cover mating surface or the diff housing mating surface. Bolt it back up and let it set up for a few hours prior to refilling it with fluid.
As far as fluid goes, if you have a limited slip differential, your truck will take 75w-140 fluid. It will also require a friction modifier. I recommend going with Redline fluid, as it already contains the friction modifier. If you don't have a LS diff, I'm not sure what fluid it takes.
Since it sounds like you're not overly familiar with this process, I would recommend spending $25 and getting a Chiltons or Hayes shop manual from your local auto parts store. It will provide a more detailed process, as well as torque specs and fluid capacities.
-Craig
I would highly recommend getting an aftermarket Mag-Hytech cover for your truck. It's a little spendy, but well worth the money. IT uses an o-ring to seal the cover instead of the gasket goo. It also has a higher fluid capacity and a drain plug. The next time you have to change diff fluid, you'll thank yourself for buying one.
If you plan on reusing the stock cover, you will need to run a bead of the gasket goo stuff along either the cover mating surface or the diff housing mating surface. Bolt it back up and let it set up for a few hours prior to refilling it with fluid.
As far as fluid goes, if you have a limited slip differential, your truck will take 75w-140 fluid. It will also require a friction modifier. I recommend going with Redline fluid, as it already contains the friction modifier. If you don't have a LS diff, I'm not sure what fluid it takes.
Since it sounds like you're not overly familiar with this process, I would recommend spending $25 and getting a Chiltons or Hayes shop manual from your local auto parts store. It will provide a more detailed process, as well as torque specs and fluid capacities.
-Craig
#4
You will most likely not find Redline at a chain-type auto parts store. You can search Redline's website for the closest retailer, which is how I obtained some. The link will show you the stuff I'm talking about.
http://www.redlineoil.com/products_g...5&categoryID=6
-Craig
http://www.redlineoil.com/products_g...5&categoryID=6
-Craig
#5
#7
Originally Posted by 4wd150
does the royal purple have friction modifier in it? do you really need the modifier at all?
-Craig
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#9
Originally Posted by 4wd150
does the royal purple have friction modifier in it? do you really need the modifier at all?
Originally Posted by Impact9
x2 on the Mag-Hytec. I put one on my truck and it well worth the cost. Very easy to fill and drain and looks damn cool. Just use Royal Purple synthetic 75-140. Some of the best stuff on the planet and widely available at most chain stores like Autozone, Pepboys, O'Reillys.
#11
today all my parts store had was valvoline full synthetic 75w140
bought 3 quarts.http://www.valvoline.com/pages/produ...asp?product=58
thats the stuff, it says contains additives but i am not sure. what are your opinions on this stuff
thanks
bought 3 quarts.http://www.valvoline.com/pages/produ...asp?product=58
thats the stuff, it says contains additives but i am not sure. what are your opinions on this stuff
thanks
#12
Originally Posted by 4wd150
today all my parts store had was valvoline full synthetic 75w140
bought 3 quarts.http://www.valvoline.com/pages/produ...asp?product=58
thats the stuff, it says contains additives but i am not sure. what are your opinions on this stuff
thanks
bought 3 quarts.http://www.valvoline.com/pages/produ...asp?product=58
thats the stuff, it says contains additives but i am not sure. what are your opinions on this stuff
thanks
-Craig
Last edited by theantiriced; 11-25-2007 at 11:48 PM.
#14
#15
i was going to order a mag-hytec but instead i just ordered another cover from ford for $40, i know that mag-hytec cover is good and all but just dont have that kind of money right now. my problem is i dont know if the valvoline has friction modifier in it or not, because i do not want to add a tube of it if the gear oil already has it.
thanks
thanks