So I recently bought my 04 sti and it was running fine. Then there was this pinging sound in the engine compartment so I took it to a dealer. They said that it was an internal engine failure and that the engine would need a tear down. So it was done and they came back telling me that it needed a new clutch and timing belt (not internal engine failure). So they put everything back together including new clutch, timing belt, seals, gaskets and pulleys and there was still a pinging sound. My fiance and I determined that it was from the aftermarket headers banging off the frame. So we had the dealer swap out the headers for the stock ones. No more pinging. Took the car home and the next day there was a coolant leak. Towed back to dealer and they said that it was not something that they would have touched while working on the car, which I found hard to believe but whatever. They replaced the hose for free. 700 miles later the engine seized. I took the car to another dealer this time and they told me that a piston melted inside the engine and that I would need a whole new engine. They also told me that my car only had 1/2qt of oil in it and that the previous dealer over torqued the engine when they put it back together. The car was not leaking oil. The car was not burning oil. There was no oil anywhere, including the engine apparently. There were also not engine lights on to indicate overheating or oil problems. So I called the other dealer and they said that my car lost 4.5 qts of oil from a cobb tune, down pipe, intake, and the aftermarket clutch and headers(which had already been swapped out). So essentially because the car is modified the oil just disappeared in less than 700 miles from the last time the dealership saw the car and 2600 miles from last oil change. Any comments on that one?