If you google the term "HTO-06" on site: www.acura.com it doesn't even come up. I think the whole HTO-06 thing was just pretty much a media blitz for Exxon-Mobil and Acura.
I've never seen a published list of what oils meet HTO-06. If PP 5w30 says it meets it on the bottle and/or on the website, I'd say it meets it.
I've never seen a published list of what oils meet HTO-06. If PP 5w30 says it meets it on the bottle and/or on the website, I'd say it meets it.