octane rating and engine performance
In Texas, the minimum octane rating is 87. On a recent trip to Glacier, I noticed a lot of the fuel in states like CO, WY and MT, the octane was 85, and you had to buy the mid-grade to get 87 and abov...
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Grit; humidity makes a BIG difference too. It's foggy where I race and about 1,000' from the ocean. Water take up a lot of air space so it makes the DA go up. Water also acts as a detonation suppressant. Weather stations are very important where I race.
