Remember, 87 octane E-10 is a blend of 10% ethanol and 90% 85 octane gasoline therefore, it already contains 10% ethanol. The baseline for the 2 points per 10% "rule of thumb" would be 85 octane rather than 87 octane. For example; Adding an additional 20% ethanol to E-10 gasoline would result in a 30% ethanol/70% gasoline mixture and approximately 91 octane.
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Today's Featured Article - Ford Super Dexta - by Anthony West. The rusty blue tractor caught my eye as my truck zipped by the farm implement business. It looked so fornlorn amongst the lineup of newer equipment. But it was just the right size for my small farm. I stopped in and asked the proprietor for further information. "It's a 64 Ford Super Dexta", he said. "It's a tough little tractor, although it's a hard starter being a diesel and all." He did manage to get it running, compliments of a can of ether. Once started it putted along pretty good. It
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