So here's how it goes. The dealer no longer has any clue what's going on, but so far they've had to swallow a lot of $$ worth of needless stuff I took the truck ('92 FJ80) in, thinking I needed a new rear main seal since the truck seemed to be bleeding rather heavily from there. They changed it, told me the old one looked fine, but that they had the leak fixed, and sent me on my way. About 3-4 days later I checked the oil, and after adding 5 (5!!!) quarts of oil, I was back up to normal level. So I took it back, and had a long talk with the manager. So they put a new PCV valve on, said it was fixed, and sent me on my way. They put in 5 (5!!) quarts again that friday. I put 3 more quarts in over the weekend, and I think they needed 3-4 on monday when I took it back (AGAIN). So after talking it over with a "master" technician, we decided that since the PCV valve had been totally dry, there might be a blockage. They tested the valve cover (how do you test a valve cover for pressure?) and told me that it was gummed up inside and I needed a new one. So I figured hey, if it's trash anyways, why not cut it open and see what's wrong, right? Well, the answer is.... Nothing. So now they're even more in the dark about what's going on, they only know that the engine is somehow pressurizing and blowing oil all over the undercarraige from the rear of the engine. I'm talking like 4-5 quarts in 150-200 miles. Oil pressure still seems fine tho, so now I'm stumped too. I guess I need to know 2 things: First, do you think I should pay for the new valve cover? And second, what the hell do you guys think is wrong with this thing?