was at walmart and saw Quaker State High Mileage. I looked at the bottle and not only did i see that it contains sludge 50, but also none of the bottles had the api "sevice SM" "doughnut" symbol on the back, nor did it have the "starburst" "certified for gasoline engines" on the front. to top it all off the text on the back only talked about how the product helps worn engines there was no text stating the specs for chrystler, ford, gm requirements. Is this a really bad marketing gimick for Quaker State High Mileage, or is this stuff not certifed for use in any gasoline engines? I decided of course to stick with my usual YB, but this cought my eye. has anyone noticed this before?
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