Posted by Steve@Advance on August 01, 2018 at 15:38:41 from (24.182.105.179):
In Reply to: Re: top tier gasoline posted by Geo-TH,In on August 01, 2018 at 12:02:05:
Reading the article, the main concern is intake valve deposits.
Just about all the car and light truck engines are now GDI (gas direct injection). It's an improvement, gives the ability to run higher compression without detonation because the gas isn't in the cylinder until time to fire. Higher compression gives more power and better mileage.
But, there is a problem. The fuel goes directly into the cylinder, not in the intake, so the back side of the intake valve tends to build carbon deposits. The traditional fuel systems kept the back of the valve somewhat clean by the fuel constantly bathing the back of the valve, but even then when the guides and seals get sloppy, or the vehicle sees short trips and city driving, they will carbon up.
The deposits come from burning oil that comes down the guide. The mfg's require only approved oil, and a strict oil change policy. The problem can be far more serious than just lagging performance. If enough carbon builds, it can break off, hold a valve open, or get on top of a piston. Not good!
The requirement of high detergent gas can help keep deposits out of the combustion chamber, and keep the injectors clean, and may have something to do with the elimination of a serviceable fuel filter.
But, it still doesn't address the valve deposits, because gas never goes there! I don't know what they are doing to remedy the problem, possibly some are injecting "some" fuel in the intake. In that case the high detergent fuel would be essential.
The list of suppliers looks to about cover all that I can think of. One missing though, Murphy, is Walmart gas!
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. 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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
