Well, Im glad to hear at least you know wtf went wrong with it.
If you never touched the engine and the other dealer was the last to touch it?
Hold them responsible for the damages. Thats BS that YOU have to foot the bill albeit a discount from Fontana.
YOU shouldn't be help liable, Unless they can prove YOU did it.
Im NOT happy to hear your footing the bill But its great they've traced it.
Good job Fontana
