Thanks for the reply (and to all who replied). That’s sort of what I thought, though the price is not really the issue. I haven’t changed coolant in several years, and back then, all that I needed was green. Now I see the “one size fits all” and wondered if it was advertising hype or really true. I follow the owners manual pretty closely, and given their warning about mixing colors, I wanted to know if the rules had changed. BTW the first change is scheduled at 100,000 miles, and every 36,000 thereafter IIRC.