You gotta wonder about some of the decisions going on at Shell Oil Products (U.S.), the makers of Pennzoil and Quaker State.
First they marketed Pennzoil Platinum as being Dexos1 certified. Then later they said Pennzoil Ultra was, unofficially. Now they have changed and said Pennzoil Gold synthetic blend is the Dexos1 oil for Pennzoil and Quaker State Ultimate Durability is for that brand. Lemme get this straight, Pennzoil Gold is marketed as the "middle" oil (3rd best out of 5 brands) on the Pennzoil side; but it somehow matches the performance of Quaker State Ultimate Durability, which is the #1 top-of-the-line fully synthetic oil at Quaker State. How can that be?
First they marketed Pennzoil Platinum as being Dexos1 certified. Then later they said Pennzoil Ultra was, unofficially. Now they have changed and said Pennzoil Gold synthetic blend is the Dexos1 oil for Pennzoil and Quaker State Ultimate Durability is for that brand. Lemme get this straight, Pennzoil Gold is marketed as the "middle" oil (3rd best out of 5 brands) on the Pennzoil side; but it somehow matches the performance of Quaker State Ultimate Durability, which is the #1 top-of-the-line fully synthetic oil at Quaker State. How can that be?