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Farmall & IHC Tractors Discussion Board

Re: Should I be burning 93 octane fuel?


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Posted by MN Scott on September 23, 2007 at 19:45:29 from (206.9.216.71):

In Reply to: Should I be burning 93 octane fuel? posted by Butch WI on September 23, 2007 at 03:56:14:

Sure wish the Tractor Vet would get his computer fixed, he's the expert on the IH six bang gassers. Keep in mind the 6 cylinder gas engine IH used in its tractors is the for the most part the same one used in its pickup trucks so they are stressed to the max and every thing has to be near perfect for them to last. If you run less than 93 octane in a IH six bang and work it hard you will score cylinder walls. I know, been there done that. The problem is low octane fuel burns quicker causing more heat in the combustion chamber. The cast aluminum pistons will swell from the extra heat and score the sleeves or melt holes in the tops of the pistons. If you look in the owners manual for a IH gas 6 cyl tractor it states that at least 93 octane is required. Don't beleive me? put in a tank of low octane fuel and go plow or other hard work. Won't take to many hours and you'll be back with a missing popping severelly sick engine. Now if you do light work you might get by with low octane but with the cost of parts why risk it?


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