
Originally Posted by
Liquifire
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.