Quote Originally Posted by Liquifire View Post
green stuff is only to be used with green stuff and the yellow. The yellow is supposedly able to be mixed with any type and be OK. The dexcool is only to be used with dexcool. This is stuff that gm used from the factory. It is known to be corrosive if used with other coolants, or if air is in the system, or if it is not changed out at proper interval levels. The stuff will sludge up easy and make scum in your coolant system and eventually eat up your gaskets if not taken care of properly. I personally did a thorough flush, got rid of all coolant, and started over fresh with the green. It is up to you what you would like to do though.
I didn't understand your original question...so we're using the green stuff. I still really haven't seen an answer to the question about the radiator...how would I check for a leak? The only thing we've noticed is that there is steam coming out of the exhaust when the car is first started, but it doesn't smell sweet (of anti-freeze)...what about the LIM gasket replacement? Would that help?