Dave, where did you find that it is approved? I don't see that anywhere. What I do see on their site is that Dexcool meets MS-9769 (even though they show it is an OAT not a HOAT), but I see warnings all over to avoid it like the plague. So not considering it, just makes me question the rest of their info. I plan to use the Zerex G-05 and not mess with it