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89 Octane - Better Idle
There are a lot of possibilities here - winter blend gas at the stations, etc..., but I put 89 in the tank at last fillup just for giggles, and I swear the car idles smoother. Not that it idled all that roughly in the first place, but it's very noticeable. Same station I always fill up at too. Has anyone noticed a difference in idle when using higher octane?
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