Pennzoil High Mileage vs Castrol GTX High Mileage?

My local auto store has 5 quarts of Pennzoil High Mileage for 16.99, but 5 quarts of Castrol GTX High Mileage on sale for 9.99$. Which one is better, or does it not even matter and I should just get the cheaper one? It's going in a 2002 Ford Focus ZTS with 155*** miles on it.

Either one will work fine. Buy the cheapest. If they let you buy 2 or 3 you will never see it that cheap again.

Both good go cheap

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