I have been told to only use Dextron coolant
when I flush my old out is that true or is that away
of selling there coolant?
Buick Q&AAsk Your Question
2006 Buick Lucerne Question: Coolant
Answer #1patrick mannion from Greg Solow's Engine Room, February 13, 2011, 13:04Master
Dexron is a transmission oil. Did they say Dexcool which is a GM long life coolant. Any good quality antifreeze would be fine if you thoroughly flush the cooling system. A lot of people do not like Dexcool Antifreeze.