Originally Posted By: c3po
Pennzoil now owns Quaker State, time for Johnny to respond.
Yes, the Pennzoil Products Company bought the Quaker State Oil Company back in the 90's to for the Pennzoil-Quaker State Company. Shell Oil Company USA, division of Royal Dutch Shell Oil Company bought the Pennzoil-Quaker State Oil Company in 2002. Shell Oil Company USA formed a separate division called SOPUS (Shell Oil Products US) to sell the Pennzoil, Quaker State, and Formula Shell products. As stated above, all of the products are completely different formulations. They are not the same.