ok, i got a brand new engine from a chevy dealer last year and it came with a 3 year 50,000 mile warranty. 24K later i am leaking oil from the valve cover, timing cover, and rear main seal. am i wrong in thinking that they probably used new seals and gaskets with the new motor? i looked at my reciept and on the list is a bunch of new gaskets but they dont say what any of them are. many of them have lifetime gaurantees. im hoping this will be free since there is only 24k on the motor. what do you guys think? need input!