I have seen it at a few stores,I do know that a LOT of products all come from the same factories like Warren oil just with different labels on them (and different prices). The main difference is just a label change or a bottle change in the assembly line. I have strictly used TSC oil for the last 3-4 years since I live within a few blocks of a TSC store, and I am not into switching brands just to be switching, but I would not hesitate to use Peak and it would do as well as TSC or NAPA oil.. probably made at the same factory with just a change to a blue bottle and a new label.