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As you all know, all we can get in alaska is 90 octane and the new crossfire 8 calls for 91 octane minimum. If you look at toulene it is 114 octane so you only need to add 4/10s of a gallon to get 91 or double that to 8/10s to get 92 octane in 10 gallons of gas. It is supposed to be the cleanest fuel there is. It's cleaner than 100ll av gas and you use less. Any comments or questions.............mark