![Photo](https://secure.gravatar.com/avatar/df529b410ae60d94f7281a653b0123f6?s=100&d=https%3A%2F%2Fseadoosportboats.com%2Fpublic%2Fstyle_images%2Fsdsbmaster%2Fprofile%2Fdefault_large.png)
Ethanol
#1
Posted 03 May 2006 - 07:44 PM
I didn't ask the attendant since I assumed they wouldn't have accurate information for my particular engine. Does anyone have information on how an ethanol mixture will affect the Mercury Optimax?
#2
Posted 04 May 2006 - 08:47 AM
Gasohol, like many alternative fuels, has a higher specific gravity than standard fuels. This factor may create fuel delivery problems, since the fuel system in an outboard engine is not as adaptable as automotive systems. Additionally, I have not researched the compatibility of gasohol and 2 cycle oil, so it is better to play it safe and avoid it for now.
I'm doing all I can to avoid using it in my 250 Opti.
#3
Posted 04 May 2006 - 04:42 PM
#4
Posted 22 May 2006 - 11:41 PM
I know that Mythbusters did a segment on ethanol in gas and it seemed to eat fuel faster. I have been running fuel like jeepstudchris in California for 2 years now with no problems.New warnigns are being posted at local gas stations in Southeastern Pennsylvania, "Warning: If you are about to put fuel into your boat, please see the attendant about how ethanol may affect operation."
I didn't ask the attendant since I assumed they wouldn't have accurate information for my particular engine. Does anyone have information on how an ethanol mixture will affect the Mercury Optimax?
#5
Posted 15 February 2008 - 04:48 PM
I had a problem which I think is galvanic corrosion of electrical terminals inside the fuel tank. As ethanol increases conductivity of gasoline from a dielectric/insulator to a conductor is allows for galvanic erosion of anode connectors.
Ethanol also increase gasolines potential for absorption of water thus further increasing corrosion and galvanic erosion.
I have had 2 fuel pump failures due to erosion of positive terminal crimps connecting the 12volt supply to the pump within the tank... Its and expensive business and a design problem now ethanol is being added to fuel in greater concentration without being labelled as including this conductive and corrosive additive.
The latest pump has failed with only 2 hour of use and 3 months submerged in a full tank of gas. Luckily Seadoo changed the second pump as a warranty part replacement but they should look into a redesign of the fuel pump installation inside the tank!
#6
Posted 15 February 2008 - 05:06 PM
I had a problem which I think is galvanic corrosion of electrical terminals inside the fuel tank. As ethanol increases conductivity of gasoline from a dielectric/insulator to a conductor is allows for galvanic erosion of anode connectors.
Ethanol also increase gasolines potential for absorption of water thus further increasing corrosion and galvanic erosion.
I have had 2 fuel pump failures due to erosion of positive terminal crimps connecting the 12volt supply to the pump within the tank... Its and expensive business and a design problem now ethanol is being added to fuel in greater concentration without being labelled as including this conductive and corrosive additive.
The latest pump has failed with only 2 hour of use and 3 months submerged in a full tank of gas. Luckily Seadoo changed the second pump as a warranty part replacement but they should look into a redesign of the fuel pump installation inside the tank.
![Posted Image](http://www.regisnvq.co.uk/Corrode.jpg)
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users