Actually, if that is a European certified motor oil, $6.50 a quart may be cheap. And if that Pennzoil 5W-40 meets all American and European requirments, it could probably be used in American cars and trucks. It might be a little bit thicker then Mobil 1. Does it meet Corvette requirments? Because if it does, and it is a little thicker then Mobil 1, then this might be exactly the oil that Corvette owners are looking for.