- Staff
- #5,061
- 56,145
- 24,003
Have you tracked your mileage on a tank of 89 versus premium? While it will cost you around $1 a tank to run premium, your mpg should improve.89, I don’t got money for dat 91 rn lmao
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If you achieved 2mpg better with premium across a 12 gallon fill up, you’d travel 24 extra miles at the cost of ~$1.00.
If you normally get say 30mpg at the cost of ~$2.60?, the cost of premium is worth using. The engine would be cleaner, and you’d actually be getting the full power potential of the engine without the ecu adjusting for lower octane fuel.