Take the POLL: Premium Mogas vs Rec Fuel

[NoWingsAttached]

Given the choices following, which fuel would you prefer for use in a hot-running, air-cooled, 100hp 2-cycle engine, given that both are locally available?

"Rec" fuel, or recreational alcohol-free mogas, 90 octane. $4.15/gal

OR

Premium mogas, consistently tests to 5% ethanol, 93 octane, $3.95/gal

[MichaelBurton]

Where do you find this fuel?

[NoWingsAttached]

Look for it anywhere there are a lot of boaters...

[Joe Pires]

I get it 3 places in my area. One gas station has it, a marina, and a fuel distributor all carry recreational gas.

[Joe Pires]

any of these near you Michael?

http://pure-gas.org/index.jsp?stateprov=UT

[Stan V]

I've used both in my ej22 fi but in the past year have been using the 93 oct., like has already been said the 90 oct is available from any station serving a marine community. I buy the 90 oct for my motorcycle, lawn mowers and my mixed 2cycle weedeater/leaf blower/chain saw. The survey doesn't address the manufacters octane requirment or the compresion ratio. My issue with the 93 is the damage it can do the the rubber is comes in contact with(fuel hoses etc) PRA 41973

[MichaelBurton]

Originally Posted by Joe Pires

any of these near you Michael?

http://pure-gas.org/index.jsp?stateprov=UT

That list is old. Now the closest to me is 30 miles away 60 mile round trip. Not so good when you are trying to run a business.

Also the airport will not let me store fuel so I am required to bring it in cans.

I usually buy 25 gal at a time. I need to buy fuel every day when I am doing training. That makes it too hard to travel 60 miles for fuel.

[Joe Pires]

Originally Posted by MichaelBurton

That list is old.

It may not have anything for you, but the list is updated regularly. I checked the first four on the list. One was updated in July, another October 1, another June 29th, and the last was updated September 7th all of this year.

[NoWingsAttached]

Originally Posted by Joe Pires

any of these near you Michael?

http://pure-gas.org/index.jsp?stateprov=UT

Wow, good link! I found another station not too much farther from the one I'd found that has Rec fuel for only $3.98, so 17 cents cheaper

[Brent Drake]

There was a gas tank problem a few years ago with ethanol. Not sure the difference in octane is what deteriorates the rubber. I believe the ethanol is the culprit.

[MichaelBurton]

Originally Posted by Joe Pires

It may not have anything for you, but the list is updated regularly. I checked the first four on the list. One was updated in July, another October 1, another June 29th, and the last was updated September 7th all of this year.

I see the updates. Thanks for the link. I called the Orem station and they still have 88 octane Clear gas. Not convenient but closer than Heber. $3.99/gal so that looks like the best choice for me.

[Timchick]

We have several ethanol-free gas stations around here. That's all I run in my lawn mowers and 4 wheelers and that's all I plan on running in the gyro.

[ms80831]

I have a 500 Gallon tank at my house with 450 gallons of 91 octane pure gas. I get it from the same distributor that Delivers to the Pueblo marina. $4:05 a gallon delivered.

[Gyro28866]

Mark:
"I have a 500 Gallon tank at my house with 450 gallons of 91 octane pure gas."
I hope you are flying/selling/using this fuel rather quickly. Mogas does not store well, and has a rather short shelflife. I do not know if a product like "Sta-bil" can add a bit to the shelf life?, and what it does to the fuel, which would effect the final burn EGT's.
I would not buy/store more than 4 to 6 weeks worth.
Also Mogas is manufactured for the Elevation and Season, were it is intended to be used.
If you were to buy fuel on the coast and buy fuel in Denver today, from the same named suppler (ie: BP, Exxon, Shell, etc.) the two products have different properties; and will not perform the same.

[eddie]

its the alcohol fuel that has a short shelf life.however i have used alcohol fuel that was a year old in my mower and weedeater without any problems,wouldnt put it in my gyro though.
I burn alcohol 10% fuel in my turbocharged 2.5 RAF without any problems. best regards,eddie.....