Not much talk about ANs as there is about POE and PAO, who's blending with the ANs as base oil these days? I'd guess Mobil carried some of it over from their xxxxSyn days, but still not sure if it was used as a significant part of the base blend, an AN surfactant or both? Also from casual reading, I don't really associate ANs with other consumer brands than Mobil, but surely ANs must be widely used across the industry and in the consumer engine oil market, even if just as an additive. Has anyone heard or know of what other products use AN adds and/or base oils? Do ANs even have any disadvantages for engine oils?