OT Just as you're "pretty sure" they are a specific formula to the oems referenced I'm pretty sure they are all the same, with a different tint to match the oem tint. They are all Asian PHOAT AF's. As an example the PB OEM Blue tint label lists Acura, Honda, Infinti, Mitsu, Nissan, Subaru, Isuzu, Kia, Hyundai and Mazda. Not all of those use a 'blue tint' (mazda, Hyundai/Kia), implying to me same AF. Same label list for the Green tint OEM AF. All tints list same service interval and PHOAT AF chemical attributes. As this is off topic, if you information (pds/spec sheet) showing that inhibitors used are specific to oem manufacturer, feel free to post it in another thread.