Fuel quality is of extreme importance in operating a farm tractor. I believe the sincerity of the The Tractor Vet in his insistance on 93 octane fuel. I respect his opinion. I believe the fuel delivered by the bulk distributors in his location was of poor quality control (especially from one source, maybe a particular brand or farm supplier, that had a desirable price. (I suspect it would not have gotten to 85 R+M/2) I have been around farmers with 6cyl gassers that have used "regular" gasoline in them from new without any detonation issues, and expected engine life. When the lead free fuels were introduced no changes were made. When alcohol was added, no changes. IH Oil with Low ash was used (or premium brand name diesel oil that had limited ash in its formula). A coked up engine with radical deposits in the chamber will be far more successful staying alive on 93, than 87 R+M/2 fuel. I found this in tractor Data .com if it is relevant. Jim Interntional Harvester C291
Fuel: gasoline
Cylinders: 6
Valves: -unknown- Bore/Stroke: 3.75x4.39 inches [95 x 112 mm]
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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