mystery mileage problem
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Scion Evolution
Joined: Oct 2006
Posts: 995
From: Pearl City, HI
mystery mileage problem
I solved the mystery as to why i was only getting 20 mpg! I was using the premium grade fuel every tank since i bought my car, then tom said "use 87 only", so i did. Now, after just one tank of 87 octane fuel, i'm getting 30 mpg!!! there is a 10 mpg difference between 92 octane and 87 octane fuel!!! thanks tom!!!! 
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