Originally Posted By: Xstang
Anyone remember the quaker state hi mileage oils that didn't even have the API donuts on them?
I do, along with other brands' high mileage offerings. I always questioned the wisdom of getting a modern ILSAC (or even a modern API) certification for a high mileage oil. My high mileage truck is long, long out of warranty. Higher ZDDP would be a "nice to have" thing for it. QS HM can often be found on a nice sale. With reduced ZDDP, there's no point in me paying extra for QS HM, when I can get other modern oils far cheaper, or an HDEO for a competitive price. Then again, if they want people with new vehicles under warranty to pony up the extra bucks, those people might want to see the donuts.
Originally Posted By: Solarent
This one will be an interesting one to keep an eye on because without the new standards and relying on Zinc for "older engines" seems to fly right in the face of what the EPA is trying to accomplish.
I'm assuming this won't be ILSAC certified. However, as was already pointed out, Quaker State, a number of years back, introduced an oil with elevated ZDDP levels, seal conditioners, and no modern API/ILSAC certifications. Unfortunately, they decided to pursue modern certifications and now are starting all over again.