Posted by MarkB_MI on May 12, 2016 at 15:23:35 from (70.194.19.88):
In Reply to: 100LL Avgas posted by Eric in IL on May 12, 2016 at 07:18:01:
It is a fact that avgas has a long shelf life, but you need to understand why. Avgas evaporates slowly because its Reid Vapor Pressure can be no more than 7 psi. The vapor pressure requirement is not intended to improve shelf life, but rather to prevent vapor lock at high altitude or on hot days. The lower the vapor pressure, the less volatile the fuel and the longer its shelf life.
There was a time when there was a big difference in the RVP of avgas versus auto fuel, but that's no longer really the case. Over the years, tightening emission standards have significantly lowered the maximum vapor pressure of fuel in many localities. In some places, it's the same as avgas: 7 psi. In other locations, summer-grade gas is allowed to be only slightly more volatile than avgas. Refer to the link below to see the maximum vapor allowed in your area.
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 - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
... [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.
