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The Peak is overpriced and has 2-EHA.....
Source or link please? Afaik, topic Peak OET Asian AF is an aftermarket Asian PHOAT, matching OEM 'type' AF, ie, phosphated OAT no 2eha. And though I'm aware MSDS not always 100% for content, also no indication of 2eha in the topic AF. I would agree that compared to other equivalent after market Asian PHoats like Walmart Valvoline Asian Vehicle and ZAF, it is currently overpriced.
Otoh, Prestone AF labeled for Honda (blue) and Toyota(red) sold at Walmart does use 2eha as inhibitor. Personally, I wouldn't use it an Asian vehicle application, or anything for that matter.