For the past three years I have been using Pennzoil Platinum and changing my oil once a year. With the latest Pennzoil promotion, I decided to buy Pennzoil Ultra instead since I can get a $25 rebate back and it would only cost $27. I drive about 4500 miles a year, 4 miles for work each way and about 9 for school each way, so mostly short trips and the reason for yearly changes. Does the Ultra still sound good for this?
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