burning/leaking oil?

[nickvisel]

About every two weeks my 93 SHO MTX burns a quart of oil, and I'm curious what I should be looking forward to replace.

There's never oil spots or leaking on the ground, though the underside of the car is definitely a little oily.

Also I did a seafoaming a week or two ago, but filled up the gas tank since, and my car still smokes out the exhaust at WOT.

Thanks for all the anticipated wisdom in advance, guys!
Nick

 

[JRA2000TL]

Maybe it's leaking oil from the rear and onto the back exhaust manifold and burning off. Do you smell a "burnt oil" smell from the car? I also have the mysterious oily residue all over my oil pan. I have some drops below the rear main as well.

Do you notice any oily residue around your rear valve covers?

 

[Eric VerValin]

How many miles? Does it always smoke out the back? If its blue smoke.. there is your oil.


Sounds like you have a lot of old rubber peices wanting to be replaced. Clean all that oil up... use brake cleaner or something.. try to dry up some of that stuff and it makes it a lot easier to tell where it's coming from.

 

[SHOtime2511]

usually valve seals cause burning oil on these motors.

 

[nickvisel]

My rear valve covers were a lot nastier than the front ones when I pulled them off to do the upper 60k. So it's safe to assume that in time, it'll happen again given the same circumstances.

The car has about 200k miles on it.

And the car definitely has a slight burned oil smell when I'm done driving it, especially after driving WOT.

Ohhh more money to spend.

 

[klobbs]

200K definitely looks like a thorough 60K is in order. At the very least change your valve cover gaskets, they aren't that hard to do and it's most likely the problem. As stated above, the oil is probably hitting the exhaust manifolds and burning off. While you're at it though, you should do the front 60K, it could be the camshaft seals. My SHO is torn apart right now due to an oil leak out of the front camshaft seal. I would've never noticed except that I popped the hood one day and saw little wisps of smoke coming out....took it all apart and saw that the camshaft seal was leaking.

 

[MichiganSHO96]

usually valve seals cause burning oil on these motors.

Second that also check the rear main seal

Jerry