I haven't found too much information on this oil around the site, I was wondering who uses it. My local dollar store sells it (1.00/quart), it does say SL rated so it can't be too old of oil and from what I understand it does have a good additive package. One side note, on the back of the bottles it says that color and smell changes can occur as they continue to improve the oil, very similar to what castrol puts on their bottles, maybe the moly?