The only reason tetra-ethyl lead was added to gasoline was it was the cheapest way known to increase the octane level of gasoline which the higher compression engines needed to prevent pre-ignition. It had nothing, NOTHING, to do with protecting valve seats. That might have been an advertising claim, but it was all about increasing octane. AMOCO sold theitr ''white gas'' which was a highly refined gasoline that was as clear as water, high octane, and no lead, but it was expensive. I understand that they're refining it again at their refineries in Texas and Virginia and it will soon be available at their midwest stations. I remember when a lot of the aircraft the military flew were powered by reciprocating gasoline engines. The military decided to go to one grade of fuel in everything. Because some of the big stuff required 115/145 avgas that became the gas used in everything. US government contracts go to the lowest bidder. Lowest bidder had to use lead to achieve 115 octane. That fuel had so much lead in it it would turn our fingers white when we took fuel samples. Which was every day. Some of the aircraft didn't need high octane. One of them was a Hiller helicopter that required 87 octane. That particular helicopter used engine oil to lubricate the transmission. The engine oil, after using the new 115 octane fuel, started leaving lead deposits in the transmission. The first thing that failed was the Borg-Warner over-running clutch, which made auto-rotation possible. The entire fleet of Hiller helicopters had to be grounded and a seperate transmission lubrication system installed. The lead deposits were fowling the clutches with a gray, gloppy substance. These old tractor engines came out when low octane fuels were the norm. They didn't need any lead then and they don't need any lead now.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
