Red1ton

Hey all..!! Ive got an after market alum diff. cover on my truck. It seeps oil thru the inter back of the cover and out to the face, I know it is porous material and leaks thru, does anyone know if I can coat the inside of the cover with some type Hi-temp paint or other material to stop the bleeding through of the diff. fluid ??

saggonwaggon91

Sounds like a bad casting to me. You can try getting the inside powder coated

Red1ton

Thanks, never thought of that, good idea.

Mexstan

Have you contacted the manufacturer of this cover? If it is a bad casting, then perhaps they will give you a new one?

Red1ton

Tried..... won't do it..!!!!!

Greg Reed

Drag racers used to use a GE electrical motor paint called Glyptol or something like that to paint the lifter valley on engines so oil would drain back quicker. Maybe something like that would work. No idea where to find it though.

Red1ton

Thanks... I'll google the names and see if I can find any information on it. Appreciate the info....

Greg Reed

I found the stuff. It is Glyptal. Amazon and Eastwood both have it. Reviews on Amazon indicate it is used to fill in porosity. Use 2 coats.

Red1ton

Hey Greg.. yeah I found it at their site HISCO.com Its pretty expensive but if it will work I can stand the price..!!! I sent an E-mail to them requesting their opinion and am waiting for a reply>>> I will go to amazon and e-bay
and Eastwood and check their listings and info on it... I greatly appreciate your assistance, thanks so much

Stamey

If the manufacturer won't stand behind it I'd make sure everyone that will listen knows the story and the manufacturer's name. I have never seen an aluminum cover, diff, valve, etc, leak and I don't expect them to, except for a bad gasket.
It ain't slander if it's true.

Chris

Red1ton

Yeah, me either, but they won't .... but thank you anyway..

Desert5600

I once fixed a bad casting on a transfer case with JB Weld. Never leaked again.

Red1ton

What did you do, coat the whole inside of the cover with JB ???