No its not the 4xtkyb special blend. But the 15w50 does not have friction modifers in it. It even used to carry the sj,sl approved for motorcycles designation. Read the label. And again, im not trying to get anyone to use this oil or any other oil. This was just for those that already do so. For the price put in your lawn mower or spread it on the kichten floor for fun an games with the wife. We usually use wesson oil for this purpose, but hey, the mobil is cheaper.