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EFV-8 Club Forum / General Ford Discussion / Octane & Ethanol Free Fuel

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Posted By Discussion Topic: Octane & Ethanol Free Fuel -- page: 1 2     BUCKAWHO 08-27-2016 @ 4:52 AM reply profile send p.m. Member Posts: 96 Joined: Feb 2016 Hi....I use 91 octane no alcohol gas in my stock '51 Ford, and I use 115 octane no alcohol "racing" gas in my 12.5 - 1 compression engine in my Vette. I use pump 87 octane gas containing 5% alcohol in my more modern cars. Have no gas related problems in any of my vehicles. BT Cecil/WV 08-26-2016 @ 6:13 PM reply profile send p.m. Member Posts: 66 Joined: Oct 2009 I use the cheapest gas I can get in my '50 Ford and I have driven it in all lower 48 states since Oct 2010, from WV to Cal. twice, over 40,000 miles and I have never added anything during storage (neither on any of my other cars, I have several) and I use MMO most of the time and it has never had a gas problem, except vapor lock. Some may call me crazy, but I was called that when I said I was driving to ST George in 2010 and again in 2013 to Tahoe. When I drove to Rapid City last year, I didn't hear any of the crazy talk, just admiration for bravery. Perhaps that will change and I will have a problem, but so far, so good! Shiny side up! Cecil/WV TomO 08-26-2016 @ 9:21 AM reply profile send p.m. Senior Posts: 7252 Joined: Oct 2009 I carry the octane booster for the occasions that the gas is such poor quality, my car pings under slight load. I have had several tankfuls like this in the past 5 years. If I had 3/4 or less in my tank, I would just add premium, but with a full tank, it will not work. Normally i use regular gas in my 40 Merc and mid-grade in my Lincoln with its higher compression. Tom This message was edited by TomO on 8-27-16 @ 12:41 PM len47merc 08-25-2016 @ 7:19 PM reply profile send p.m. Senior Posts: 1165 Joined: Oct 2013 And there it is. Thanks for putting it in perspective for us. Steve mrtexas 08-25-2016 @ 6:42 PM reply profile send p.m. Member Posts: 68 Joined: Dec 2011 Well you do the math. I'd be surprised if the octane booster is more than 115 octane as that is about the highest you can get without lead, something like toluene. So take your 1 quart of 115 and average it with 10 gallons(40 quarts) of 89 and you get 89.6. Why not just buy super? shogun1940 08-25-2016 @ 3:50 PM reply profile send p.m. Member Posts: 464 Joined: Feb 2010 Why do they put alcohol in gas? They sell non alcohol in Florida. For boats , what do they add to replace the alcohol?? If water causes alcohol to drop out of gas would mixing water with gas leave us something that would be useable with an octane booster. What is inn airplane gas for the high octane? I have a friend that uses airplane fuel in his last Fill up before putting them away for the winter,, good or bad? len47merc 08-25-2016 @ 2:51 PM reply profile send p.m. Senior Posts: 1165 Joined: Oct 2013 mrtexas - greatly appreciate your technical perspective and sharing of info. Prior to the drive to Gettysburg I was educating myself on octane boosters for the trunk just in case I could not find the 'desired' 89 octane and found quite a bit of writing on the misrepresentations made by octane booster manufacturers. Specifically how much of a booster is actually required to move the octane rating one point, versus how much the manufacturers state on the can that 12-16 oz will raise octane (some claim up to 17 octane points as you know). If you don't mind sharing your knowledge here, please expound a bit more on your comment that "You are wasting your money on "octane booster.". I found this to be the case in my reading and chose not to purchase any - hearing the data and understanding this technically will help all of us. Btw - thanks also to Alan, Tom and Drbrown for your good, sound logic and practical information. Thanks in advance - Steve This message was edited by len47merc on 8-25-16 @ 2:54 PM mrtexas 08-25-2016 @ 2:21 PM reply profile send p.m. Member Posts: 68 Joined: Dec 2011 You are wasting your money on "octane booster." TomO 08-25-2016 @ 7:54 AM reply profile send p.m. Senior Posts: 7252 Joined: Oct 2009 The gas that comes from the refinery may not have water in it, but I have had bad gas in my cars several times while on tours. I carry a can of Heet and a can of Seafoam in my trunk to help out when I get the bad gas. The Heet help[s most of the time, but sometimes the gas requires Seafoam and an octane booster to make the car run right. I always try to use the busiest station that has Tier 1 gas. Tom mrtexas 08-25-2016 @ 7:38 AM reply profile send p.m. Member Posts: 68 Joined: Dec 2011 MTBE was wonderful and a cheap octane enhancer. The problem with it was that gas station owners had underground tanks that leaked. My refinery was one of the first to put in an MTBE unit in the late 80s. Government actually encouraged it as it contains oxygen and supposedly burns cleaner. It is hardly oil company PR to tell you not to waste your money on super for an engine that will run on 75 octane. This message was edited by mrtexas on 8-25-16 @ 6:46 PM

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