Thanks for the in-depth info! Cost was not really the issue, more a question about possible advertising hype. The engine is basically the Ford 24V 3.0 V6, and AFAIK the Trib is built in the same Kansas City plant as the Escape, so coolant formulated for Ford should be ok. Just to be safe, I’ll probably go to Mazda for their stuff, which the owners manual simply calls “Mazda yellow premium coolant” without giving any other specs.