Tractor Vet, if you are talking to me -- I am not the first to question your octane numbers. I never understood from the first time you posted about needing 93 octane in 7.2-7.7 or so compression tractor engines. Then at some time it occurred to be that you were using the research method rather than the current R+M/2 method. There is a difference. As a compromise according to what I have read, 89 octane by the R+M/2 has a research number about 93, this probably varies some depending on who makes it. By the same token the current 93 octane by the R+M/2 has a research number of about 97 -- use it if you want. I was the first responder to a thread several months or maybe a year ago, not initiated by you when I said "I'm going to run 87 octane in my 460, regardless of what the experts say". I believe those were my exact words. You immediately tore into me with your usual statements about how ignorant I was and did not have your experience and had no clue what I was talking about. The thread went downhill from there, and you said you were leaving the forum and weren't coming back or something like that -- I went out to work on my tractors that you say I never work on, and when I came back the thread had gotten so bad that the administrator deleted it. You stayed away for a couple of months and came back. AND for your information I said I had a 460. The operators manual says to use 87 octane by the research method or 80 by the motor method, meaning that the R+M/2 method it was about 83.5 and hasn't even been sold in the recent or not so recent past. I will agree that on the 706-up tractors that have excess carbon in them, that a person needs to be careful with them, and perhaps they may need a higher octane number than the manual says. As the last page that Dave Slater posted says, sometimes there is damage when you can't hear detonation, and there are other factors involved. There are others on this forum who insist they have run 87 for years without a problem. Those are the ones who do not abuse their tractors. I get the feeling, although without proof, that many of the tractors you have worked on and correctly or incorrectly assumed that the wear you saw was caused by low octane were abused. Appears that your area is full of hills. I live in flat country and the soils are fairly uniform. My conclusion is that if you take care of your tractor, and don't overload it, that the octane number posted in the manual is fine.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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