I can't say much about their antifreeze, but I swear by their engine oil. That rotella 15w-40 heavy duty diesel oil is good stuff. I run in all my tractors, and when I was around big trucks we ran it in big trucks. Rotella is known for their oil. I would suspect that their antifreeze is good stuff, rotella would not want to blemish their name. Might call and ask your dealer about it to be sure.