Best gas for your Outboard?!?!

[gm280]

Fun Times, that IS exactly what I've read as well and was merely informing others about it too. But I was shot out of the proverbial saddle by GA_Boater for bring up EPA news, even though it directly does effect boater hard! So I am not going to touch it again. Let the iboaters find it out themselves. I already stay in too much trouble now. :sorry:

 

[Chrisravosa36]

I realize I could have reworded this better,

I clearly stated that. Point being is that Diesel Fuel is clearly an option, people can cleary buy and use diesel outboards for recreational use. When you go to the gas station, they don't only see gas right? they sell diesel. Why don't they call it a Diesel station? Just wanted as much information as possible. When you see a sign that say "gas station" and you have a diesel vehicle, you wouldn't go there right? You would wait until you found a diesel station.

 

[GA_Boater]

Fun Times, that IS exactly what I've read as well and was merely informing others about it too. But I was shot out of the proverbial saddle by GA_Boater for bring up EPA news, even though it directly does effect boater hard! So I am not going to touch it again. Let the iboaters find it out themselves. I already stay in too much trouble now. :sorry:

GM - It's like I said - EPA is Gov and even the mention starts all kind of things. Unfortunately we've been down this path all too often. A simple little poll diverted into an Ethanol discussion with Fed and EPA mentions throughout despite the mild Moderator warnings.

My XXXX post quoted by FT was ill thought out and that's the reason for the edit after having second thoughts.

 

[gm280]

GM - It's like I said - EPA is Gov and even the mention starts all kind of things. Unfortunately we've been down this path all too often. A simple little poll diverted into an Ethanol discussion with Fed and EPA mentions throughout despite the mild Moderator warnings.

My XXXX post quoted by FT was ill thought out and that's the reason for the edit after having second thoughts.

I thoroughly understand that, but the EPA news was an interest article for boaters and thought others would like to know about it. But then "Fun Times", a MODERATOR as well, post the exact article I was referencing in my post". :noidea:

 

[GA_Boater]

I understand. We Mods as consumers share the same feelings members about these things.

 

[WIMUSKY]

This isn't even a whats best question this is more of a question about why people don't read the owners manual. The owners manual is the one place that has the answer to this question. If you don't have an owners manual get one many questions about motors can be answered there. Or you can call the manufacturer for it's recommendations.

Best answer yet.....

 

[Sea Rider]

Although all OB's works with 90 octane or less ones whether E or non E fuels, most manufacturers recommends using higher octane fuels, have better cleaning aditives that forms less carbon build up on pistons, piston rings and combustion chamber as well. If you don't use carbon guard inhibitors added regularly on tank, these fuels are highly recommended.

Happy Boating

 

[fishin98]

I prefer Non-Ethonal gas...which is sold very close to me, if unavailable, plain ole 87 oct with a stabilizer! Don't waste your money on 89 or 91

 

[bruceb58]

Although all OB's works with 90 octane or less ones whether E or non E fuels, most manufacturers recommends using higher octane fuels, have better cleaning aditives that forms less carbon build up on pistons, piston rings and combustion chamber as well. If you don't use carbon guard inhibitors added regularly on tank, these fuels are highly recommended.

Happy Boating

http://www.businessinsider.com/using...f-money-2013-8

The EPA requires that all gasoline contain engine cleaning detergent additives, so premium isn’t better than regular at preventing the buildup of engine deposits.

 

[Sea Rider]

That's what 2 strokes Evinrude, Tohatsu and their rebadged OB'sr recommends on their Owner's Manual, the article is all about cars which don't run 5-6 K rpm all the time as in OB's. Have read the E fuels can lower as much as 1.5 / 2.0 octane from posted pump octane. If so, running a higher octane fuel will be better to compensate octane loss.. Anyway, all fuels are not made same worldwide,..

Happy Boating

 

[bruceb58]

Anyway, all fuels are not made same worldwide,..

I am talking about the USA. I can't speak about the rest of the world.

My Mercury 4stroke manual says the following:

FUEL RATINGS
Mercury Marine engines will operate satisfactorily when using a
major brand of unleaded gasoline meeting the following
specifications:
USA and Canada ‑ having a posted pump Octane Rating of 87 (R
+M)/2 minimum. Premium gasoline [92 (R+M)/2 Octane] is also
acceptable. Do not use leaded gasoline.

 

[Chris1956]

Searider, My OEM Johnson (a major manufacturer, no?) calls for 87 AKI octane non-leaded gasoline with or without up to 10% ethanol.

 

[dingbat]

What motor fuel should I use?

http://www.evinrude.com/en-us/support/faq

Current recommendations are to use a minimum of 87 octane, 89 octane is preferred. There is no additional benefit from using higher-octane fuels, in fact they may cause hard starting conditions in hot weather. If you have an older motor and the owner's manual requires premium fuel, here's why:
When these were built, the best oil available was TCW-2 rated, and did not contain the additive package (detergents, carbon preservatives, etc.) which our current oils (XD-30, XD-50 and XD-100) contain today. In that era, premium fuel contained the additive package that helped prevent the formation of internal engine deposits. That's why premium fuels were preferred at the time. Ultimately, in the late 90's the federal government mandated fuel refiners to use the same additive package in all grades of fuel and the premium fuel requirement was dropped.

What motor fuel should I use?

http://yamahaoutboards.com/owner-resources/FAQ/service-and-maintenance

Most Yamaha outboards are made to run on 86-octane fuel (R+M/2 or ?pump? octane). There are some exceptions which are designed to run on 89 octane. Those engines are the F250, F300, F350, and Four-Stroke Sport models.

 

[tjandrews]

I use my '54 10HP, '56 15HP, and '64 9.5HP Johnsons rather heavily for one week out of the year on a family fishing trip. The rest of the time, unfortunately, they stay idle. (Would that I could get more time for fishing!)

I use the cheapest station gas I can find, and the cheapest TCWIII oil. When I get home from the trip, I use up any leftover gas in my chainsaw to cut firewood. Been doing it for years. So far, all engines are very happy.

 

[crabbybait]

my bro-n-law owns a petro trucking company.. he hates ever day of it.. b-i-t-day,, a million dollar umbrella policy was needed to deliver .. now every place he delivers requires their own million buck policy.. any fun has been thrashed out of it..

anyways,, they always put whatever grade they're hauling into what ever tank the station's call low on... that's how they do..

 

[GA_Boater]

my bro-n-law owns a petro trucking company.. he hates ever day of it.. b-i-t-day,, a million dollar umbrella policy was needed to deliver .. now every place he delivers requires their own million buck policy.. any fun has been thrashed out of it..

anyways,, they always put whatever grade they're hauling into what ever tank the station's call low on... that's how they do..

So if he's hauling 87 octane and the 93 tank is low he dumps the 87 into the 93 tank? He better get a larger insurance policy to cover the fraud charges.

Surely you don't mean that?

 

[jbcurt00]

So if he's hauling 87 octane and the 93 tank is low he dumps the 87 into the 93 tank? He better get a larger insurance policy to cover the fraud charges.

Surely you don't mean that?

Dont be so sure. When I lived in California and a station owner was pulling all 3 octane pumps fuel out of 1 87octane tank. W regular @ $3.20/gal and premium @ $4/gal.

Got away w it for a while... 87octane was about 60% of his business, 20min north of the Golden Gate bridge.

Station closed and litigation was on going when we moved.

 

[GA_Boater]

When the weights & measures guys come to a station here, they check delivered gallons match displayed gallons, octanes delivered match the pump grade and no more than the posted ethanol percentage in the gas.

Granted they don't come often enough, but they will show up if there are complaints.

I certainly wouldn't post information like that in an open forum.

 

[jbcurt00]

It was 15yrs ago in California, but no, I wouldnt put it out on an open forum either, BIL or not.