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Posted By: Cat

Regular (87 octane) was $3.019 in Temecula, California. The problem is that California gas has smog reducing treatment. The air in Southern California has really improved in the last 15 years, but I never use 87 octane because my pickup barely runs on 87 octane and my car runs better (although will function on 87 octane) on 91 octane too.

Every time I drive up to Oregon and fill my tank for the first time, I think there is something wrong with my car/truck and then I realize the change in power due to the different gas.