I am a prolific buyer and seller on eBay and can smell out a legit or shady seller from a mile away. This one does not pass the smell test.
First, look at the other stuff he's selling: FritoLay cheese dip, wireless bluetooth meat thermometers, starbucks coffee, watercolor paint sets and shower heads? What would this place be doing with a couple cases of Valvoline VR1 Racing oil? And then think about the transportation costs to ship it to the USA...no way this could be authentic product. It is most likely counterfeit...and the Chinese are very good at that.
You do have the safety of the eBay guarantee to protect you...but this really isn't worth bothering over.