Ethanol vs non-ethanol, problems?

I’ve recently realized that only one lake around me sells non-ethanol 89 fuel (4.70/gal). My next best option is to drive an hour for 93 non-ethanol (3.69/gal). After those two options I’m looking at using regular premium 93 pump gas. Which would be the most convenient option as the boat stays on the trailer. I’ve only ran non-ethanol this far 50ish hours on the boat so far.

Can someone explain what the real difference is if I’m using 93 non-ethanol vs 93 pump gas with ethanol?

Is there any problems that regular pump gas could cause over time?



2018 Moomba Craz

Besides the emission reduction hoax of ethanol. Ethanol has less BTU, so it packes less of a punch per combustion event. This means less mileage/hours per gal. So more fuel used to do the same amount of work = hoax.

Ethanol is more corrosive then pure gasoline and is more prone to attracting moisture. With newer boats, like in the past 20 years, the corrosion part should not be an issue. Ethanol tolerant parts have been in wide use for years. The later however, CAN be an issue for some that have long layups or dont put many hours on in a season.

Personally, I do not worry much about ethanol. Use a quality layup fuel additive, regular maintenance, and you should not ever see an issue from ethanol use. Most important to me, is making sure im using the proper octane (or higher if thats whats available) level required. Ill take ethanol over engine damage as a result of detonation from using too low of an octane. And yes, I know what a knock sensor is, what they are for and how they work. Id rather avoid a situation where its called into action, if I can avoid it by just using the proper octane to begin with.

MLA is 100% correct.

My boat calls for 89 octane e10

I personally use top tier mix on 87/93 to make 90 octane E10

I use startron fuel additive as well.


OP,

Indmar designed the raptors for E10, I believe they recommend running Lucas fuel treatment.

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Quote:

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Originally Posted by larry_arizona

MLA is 100% correct.

My boat calls for 89 octane e10

I personally use top tier mix on 87/93 to make 90 octane E10

I use startron fuel additive as well.


OP,

Indmar designed the raptors for E10, I believe they recommend running Lucas fuel treatment.

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I believe my boat calls for the 89 or more + e10 as well, what is the e10 part?


2018 Moomba Craz

Quote:

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Originally Posted by Mendenhall90

I believe my boat calls for the 89 or more + e10 as well, what is the e10 part?


2018 Moomba Craz

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E10 is up to 10% ethanol which is the standard for automotive fuels.

I have heard automotive fuels might start blending ethanol higher to 15%


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Quote:

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Originally Posted by Mendenhall90

I believe my boat calls for the 89 or more + e10 as well, what is the e10 part?


2018 Moomba Craz

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E = ethanol and the 10 = no more then 10% ethanol. So 89 oct or higher is safe, NO ethanol is a bonus.

There is a push to up to E15. Its all driven by $$$, by those that stand to profit from it.

Okay, so regular pump gas is probably has e10. Got it.

Thank you guys!


2018 Moomba Craz

In a boat, Ethanol is bad due to being hydroscopic (water absorbing), but this is why 10% is the limit.

For high performance use, E85 (up to 85% ethanol) is poor mans race gas at appx 105 octane.

You can make serious power running E85 especially in forced induction applications.

Just an awful idea in a boat that lives on the water.


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Quote:

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Originally Posted by Mendenhall90

Okay, so regular pump gas is probably has e10. Got it.

Thank you guys!


2018 Moomba Craz

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Its all E10 unless it states:

E85
E15
Non-Ethanol.