Originally Posted by firebuick
so for me its a series2 problem period stock gasket need to be change if you whant youre engine to live
i agree 100%
there is no good reason to skip out on coolant service that much, if you were to run 200k on green antifreeze, the system would probably be extremely clogged up due to mineral deposits. so either way you are going to be "punished" for your lack of service.
there are tons of other GM cars that run dexcool all day long that never have this problem, look at the 3.5!