Originally Posted by blackxfire
Glock,
Are you running the 93 octane? Vpower.
I have noticed a big difference in the 89 octane from one Shell to another.
I ran the 89 for a couple of long trips and the mileage results were very different depending on where it was purchased.
Stan
Yes I am running the high octane. I see that BP now uses something similar in their high octane gas. I might try that to.