Auto gas versus white gas

frfly172

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Mar 4, 2012
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Any advantage to white gas over auto gas with ethanol in 2stroke yahmahas. What octane works best in the 2strokes ?
 

Bamaman1

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Re: Auto gas versus white gas

You would do better to use 100% unleaded gasoline if available. If not, you'll have to use 90/10 pump gas.

87 octane is sufficient for most engines unless they've been modified with higher compression.
 

KD4UPL

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Re: Auto gas versus white gas

I don't know much about white gas. I would suspect that ethanol free gas would be a better choice if that's what you're worried about. i don't know how it is there but I have numerous stations around my house that sell non-ethanol gas.
 

99yam40

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Re: Auto gas versus white gas

Last time I heard that term white gas was back in the 60's or maybe 50's.
It was marine gas with out all of the additives.

Motors are designed to run on the regular 87 pump gas now

Where are you finding this white gas?
 

Georgesalmon

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Re: Auto gas versus white gas

Last time i remember white gas was back in the 60's too. We used to buy it to fuel our coleman lanterns and stoves because leaded gas would plug em up. I wonder if the colman fuel is still what we used to call "white gas". If that's what it is I don't think it would be good for more modern engines.
 

robert graham

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Re: Auto gas versus white gas

Yep, it's been a long time since I've heard the term "white gas", made by Amoco....it was always considered a premium, clean-burning fuel, but not sure if you can even buy it anymore? I use just any 87 octane pump gas, with or without the ethanol, add Stabil or Seafoam, a fuel/water separator, drain carbs on a regular basis and especially at lengthy lay-ups....no fuel-related problems at all so far!...knock on wood! Good Luck!:)
 

JB

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Re: Auto gas versus white gas

Back in the 50s we used Amoco white whenever we could get it. No additives. I would expect it to be good for modern 2 strokes.
 

Charlie in TX

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Re: Auto gas versus white gas

There are 2 fuels that are called white gas. The no additive fuel that everyone is remembering and naphtha. If you are naphtha, I would say no. No additive fuel should be fine.
 

matt167

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Sep 27, 2012
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Re: Auto gas versus white gas

Marathon has something called Recreational 90, which is non ethanol 90 octane. I think has no additives either like white gas ( gasoline ). Only available in areas that have Marathon stations tho... The Colman fuel used to be called White Gas, but it is Naptha. Won't run in an outboard unless it's a rare Diesel
 

electricjohn

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Re: Auto gas versus white gas

1970's Amoco premium was referred to as white gas. It had a lot of xylene added to it. Coleman fuel is pure naphtha which is what you get when you initially distill oil. Gas is made from naphtha.
 

HT32BSX115

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Re: Auto gas versus white gas

Any advantage to white gas over auto gas with ethanol in 2stroke yahmahas. What octane works best in the 2strokes ?

Any "white" gas you can find nowadays is going to be very low octane.

You will run the risk of detonation in any engine running it. I would just use the fuel that Yamaha suggests.
 

Bondo

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Re: Auto gas versus white gas

Back in the 50s we used Amoco white whenever we could get it. No additives. I would expect it to be good for modern 2 strokes.

Ayuh,.... I don't really remember much from the '50s,.... :) But, I clearly remember the '60s, 'n '70s....

In Maine, in the '60s,... You could buy Hi-Test gasoline, Regular gasoline, or White gas...

The Hi-Test was the additive gas, 'n of higher octane,... the Tiger in yer tank thing, with ESSO comes to mind...

Regular gasoline was just that, 'bout everything but the Hot-Rods burnt it,...
It was a few cents, or a nickle a gallon cheaper than Hi-Test...

Then there was White gas,...
"They" said it was cheaper by another nickle 'cause "They" didn't have to add lead to it for gasoline motor valve lubrication...

'course, that all changed in the early '70s, when No-Lead/ Unleaded gasoline came out, 'n the car manufacturers were changin' our motors to drink the stuff...

Quite suddenly, almost overnight, the White gas pumps disappeared,...
The pumps over on the side of the buildin' became the Regular gasoline pump,...
'cause We were allowed to use it in some motors, for a few years, before Regular gasoline disappeared altogether,...

When White gas disappeared, 'n Unleaded was introduced, the price of Unleaded gas, was considerably Higher than that of White gas, 'n Regular gasoline...
As much higher than Regular, as Regular used to be over the price of White gas...
At that point, "They" said it costs so much more than Regular gasoline, because they had to take the lead out of it....

Those were also the days when #2 oil, Diesel fuel, Home heatin' oil was 1/2 the price of gasoline, "They" said 'cause it was a less refined product....
 

wn6ngp

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Aug 12, 2012
Messages
211
Re: Auto gas versus white gas

I remember when I was a boy scout at camp in the 60's. Our scoutmaster could not get the coleman lanterns to burn reliably. I asked him what kind of gas he had used. Gulf No Nox premium, highly leaded he proudly said.

Needless to say a trip to get "white gas" solved the problem.

Would todays AVGAS qualify as real white gas today? Its colored blue in Texas. There's definitely no alcohol in there.

don
 

AviatorJim

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Oct 20, 2010
Messages
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Re: Auto gas versus white gas

100LL Avgas (Blue) is lower lead than the 115/130 fuels, but it still has 4 times the lead of the old automotive regular gas. That being said, it contains no alcohol, and no other additives (besides the lead). It is very stable, and has to have a shelf life of 12 months rather than the 30 day shelf life of auto fuels. It is also $1 more per gallon at a minimum. And engines don't run better on higher octane. I used to run my last trip of the year on a tank of Avgas, but gave that up a few years ago and switched to Stabil for the last couple of trips of the season. Avgas will also DESTROY a catalytic converter in 1 tank. It is AWSOME in sailboat that use a few tablespoons of gas per trip, or in a dirtbike you only dust off a couple of times a year.

Hope that helped. -- Jim
 
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