GL1 is the "old" gear lube for which the Farmall transmission was designed. GL2 is the same stuff with some anti-corrosion/anti-moisture additives. GL3, 4 and 5 are the same stuff but with EP (extreme pressure) additives. These lubes are intended for worm and spiral bevel gear sets which operate under sliding and extremely high tooth loadings.
It's alleged certain EP additives can be corrosive to "yellow" (brass) transmission parts (bushings, cone synchronizers, etc). Also they may cause increased tooth wear in relatively lightly loaded straight spur and bevel gearsets such as are inside old Farmall transmissions.
However GL3 and higher oils will probably work fine in an old Farmall. (Fresh GL5 will certainly be better than the 50 - 60 year old oil and water mixture usually found in these things!) However given the choice I'd opt for the GL1 (or GL2) lube that these transmissions were originally designed for.
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 - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
... [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.
