Hal, I don't have a 656, etc, I do have a 460 where 87 octane by the research method is required, the compression ratio of the 263 in your 656 is the same as in my 460, 7.2:1, although there could be differences in the engines that require a higher octane. But, I think the most important thing in this octane discussion (that repeats itself every week), it seems is DON'T overload the tractor. Tractor Vet will shoot down my comments, but my understanding is that he farms very rolling ground, where any tractor diesel or gas will become overloaded, diesel takes it better than gas. It is probably more level where you live. As the saying goes "one size does not fit all". If you have doubts, use 91 octane by the R+M/2 method. I for one am not sure about the effects of alcohol, but I don't even use it in my personal vehicles as they have not yet put it in the 87 octane gas that I buy. But I somehow doubt if it causes many problems particularly if you up the octane a little.
This post was edited by CNKS at 13:35:57 05/12/12.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
... [Read Article]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
