Posted by Jim Becker on October 07, 2012 at 09:13:08 from (173.74.120.222):
In Reply to: Viscosity of Hy-Tran posted by Super-H-Mike on October 05, 2012 at 14:18:11:
A lot of things don't make sense until you understand them. This is getting far from the original question in this thread, but here goes.
The winter weight oils have to meet a set of viscosity specifications that are mostly separate from the other weights of oil. The only common viscosity spec is minimum kinematic viscosity at 100 degrees C. Additional specs for winter oils are all at lower temperatures, for non-winter oil the others are all at 100 degree or higher temperatures.
The winter oils each have a maximum viscosity at a specified low temperature that varies by each weight. They also have a maximum pour point/pumping temperature for each viscosity rating.
The non-winter grades do not have to meet any of the low temperature tests but have to maintain minumum shear rate viscosities at 100 and 150 degrees centigrade.
Multi-weight oils, such as 10W30 use viscosity index improvers that allow them to pass both the low temperature tests of a 10W grade oil and the high temperature tests of 30 grade. Straight grade oils do not contain viscosity index improvers.
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 - Show Coverage: Fair Weather Tractor - by Dave M.. No, Fair Weather isn't some rare brand. It's the kind you can't leave out in the rain. Here's how it happened. I had been casually looking for a tractor for weeks. I saw a few 9N's, but they had even fewer amenities than the 8N my Grandpa bought new in '52 with a Dearborn loader. That was 10 years before I was born, so I grew up thinking that 8N was the world's best tractor. Grandpa had greenhouses, with over half an acre under glass, and that 8N did almost everything. It was the only
... [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.
