So I just had new heads put on my truck about 2 months ago. Before this, it never used any oil. Now, in the last 2 months, it's used 2 quarts. This morning when I checked the level...it was low again. I went ahead and changed it, so I'm gonna check it again in about a week. The truck is also blowing out a little blue smoke when I first start it(which it didn't do before). It stops after that. There aren't any leaks that I could see. So...where is the oil going???????????????

 

Where are the heads from? Sounds like the valve guides and seals are bad in your "new" heads....

 

Not sure where they were bought. All I can tell you is that the machanic got them, and put them on..

 

Sounds like valve guides to me as well. I dont know what kind of guides/seals the 3.0 uses, but I'm sure someone can chime in.

If your valve seals are bad, oil will drip down from the rocker arms, into your cylinders, while the engine is off. It collects, and when you first start it, it burns out, thus the blue smoke on start up..

 

x2 to the above posts.....that's gotta be it. Or possibly the "new" head's valve guide could also be worn down as well....allowing the same problem to happen.

 

"New" as in factory new?
"New" as in remanufactured?
"New" as in "New to you"?

 

Sounds like you need to take your truck back to the mechanic that did the work and ask him to check it out.

 

Talked to him today. I'm going to take it back to him on Monday. Wants to do a compression test on it. will this tell him anything? As far as the heads are concerned, I'm thinking that they were "rebuilt", so yea, they could have bad guides.

 

Very well could be the guides, but also, how many miles are on your truck? I have seen where a head swap has taken place on higher mileage engines and the higher compression from the milled heads caused the piston rings to fail.

 

^good possibility on that as well.....i forgot that happend to my old 305 i had.

 

She's sitting at 162,000 miles. I'm actually thinking that with that many miles...to use that much oil maybe isnt that bad.

 

the whole point though, is that the truck wasnt using oil until you had the heads replaced. what was the reasoning for the head replacement? If you overheated the truck, you probably seized the rings as well as ruined the heads.

 

The engine may pass a compression test but still pull oil through worn valve guides/stems and seals.

 

Yea, got the truck hot. so thats what lead to having the heads changed.