Shindig Posted June 26, 2017 Report Share Posted June 26, 2017 Is there any harm in mixing Rec. Fuel with regular fuel in your tank? Link to comment Share on other sites More sharing options...
mdemott Posted June 26, 2017 Report Share Posted June 26, 2017 I did it to bring my fuel tank back to marine grade only. That was on a two stroke motor. I also added Sea Foam to get rid of any moisture. Had no problem, motor ran fine. Link to comment Share on other sites More sharing options...
Bamaskeet Posted June 26, 2017 Report Share Posted June 26, 2017 Most of what I have read is to minimize mixing of ethanol fuel and non ethanol fuel. Run your gas tank down before mixing. Although it is my understanding that ethanol is mixed with gas at the tank farm. Link to comment Share on other sites More sharing options...
Wanaflatsfish Posted June 26, 2017 Report Share Posted June 26, 2017 9 hours ago, Shindig said: Is there any harm in mixing Rec. Fuel with regular fuel in your tank? For what purpose? To move from one to the other? Meaning, you have corn juice and want to move to rec fuel? Or, vice versa ? Then, not a huge deal, just run down the tank as far as possible and then mix. Over time the differences will be minimal in a few tanks. If you are considering doing it on a regular basis, not recommended from all I've read. DC Link to comment Share on other sites More sharing options...
hurricane Posted June 26, 2017 Report Share Posted June 26, 2017 I've mixed it many times, never an issue. I try to use ethanol free when I can, but it takes some planning since the only station near me is outta the way. So when its time to go fishing and I need gas I get whats available. Im not saying its the best thing to do, just that it has never given me an issue. Link to comment Share on other sites More sharing options...
HoneyB Posted June 26, 2017 Report Share Posted June 26, 2017 Mixing non ethanol to ethanol gas can not hurt it. Mixing ethanol to a tank of non ethanol will burn just fine but you have to know you are basically contaminating the non ethanol fuel. Link to comment Share on other sites More sharing options...
linesider 159 Posted June 26, 2017 Report Share Posted June 26, 2017 Doesn't make any difference at all. Octane is octane regardless of ethanol content. Link to comment Share on other sites More sharing options...
smilemaker Posted June 26, 2017 Report Share Posted June 26, 2017 I know a fuel truck driver here in SC He drives the truck to Wilmington NC pulls under the dispenser puts in a fancy credit card and it puts in non alcohol gas next dispenser knows how much alcohol to put in. If you add 10 gal of 10% ethanol gas to 10 gal non ethanol you have 20 gal of 5% ethanol. I would be more concerned over age and condition of original gas. Link to comment Share on other sites More sharing options...
mulligan Posted June 26, 2017 Report Share Posted June 26, 2017 3 hours ago, linesider 159 said: Octane is octane regardless of ethanol content. Yes and no. Octane is a rating, so if 87 e-10 and non-e 87 are measured and used at the same time it is true. Now take into account the time from which the dinosaur juice is squeezed, ethanol added, goes to the station, and gets pumped into your tank. Also keep in mind that the higher octane of the ethanol drops to the bottom of the tank, along with water, leaving the lower octane at the top. Now you pump your e-10 87 octane fuel and it is not going to be 87 anymore. On average they say by the time you pump e-10 that you will lose 2.5 points of octane. So that pump that reads 87 is really 84.5 octane. Link to comment Share on other sites More sharing options...
Shindig Posted June 27, 2017 Author Report Share Posted June 27, 2017 The boat is used frequently and I routinely use regular gas with Stabil Ethanol additive because locally it is available and convenient, rather than travelling miles out of the way for ethanol free gas. However, on some occasions when on the water the marina will only have ethanol free gas. Thanks for the replies. Link to comment Share on other sites More sharing options...
conocean Posted June 27, 2017 Report Share Posted June 27, 2017 I was told by a Citgo rep that it's not a good idea to fill up your boat or vehicle with corn juice and let it sit for a month or more. Regardless if you add ethanol treatment or if you mix it with Rec90. He said that people who use their boats regularly (a few times each month, or more) shouldn't be concerned with the type of fuel they use as the main corn juice issue stems from allowing it to sit in your tank & in your fuel lines for extended periods of time. He also said that Citgo did tests that showed the use of corn juice in non-metal tanks is not a good idea and that corn juice degrades Rec90 when they are mixed. I'm no scientist and I don't understand all the "ins and outs" of this topic. I only know what I've been told. But I have never pumped a drop of corn juice in my current boat's tank nor would I. Why have my motor burn lower octane corn juice if it doesn't have to? Link to comment Share on other sites More sharing options...
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