SJSRubicon
Well-Known Member
I thought about trying the 89 As our 91 here is $20 more a full up. Thanks.Yeah, a lot of times, a higher octane is more for preventing performance degradation, like that can occur in high thermal situations towing and/or hot temps, vs. outright better performance.
The other thing to keep in mind, is that the "87 octane" you're getting may not be "good" 87. I've had a lot of high performance vehicles, many with aftermarket tunes/turbos/etc., and tested/logged quite a bit, and there's a bit of variation in the actual octane vs. the labeled octane (for example, around here, I noted that Sunoco has consistently right on the numbers 93).
So like an 89 might build in a little margin-of-error for the octane.
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