Two weeks ago I ordered a Cherokee limited with 6 cyl engine. I see the owners manual recommends 87 to 89 octane with preference for 89. For those of you who have the 6 cyl engine what are you using?
85 octane here in Denver, CO. Because of the elevation, our normal octane is 85. If you go to Costco for gas, which I do, you can choose between 85 or 91 here in CO. I always used 85 octane in my last SUV with a 4.2L I6 and had no issues.
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