I am in the livery business and own multiple vehicles. I usually buy Lincoln and Ford but am being forced back into General Motors. Back years ago I had Suburbans and there were two things which I took note of. #1. The coolant bottle after 2 years leaked and looked like it went through an acid bath. Not the case with LIncolns and #2 pinhole leaks in the radiator causing me a nice bill for $750+. How else could this have happened except for Dex-Cool?