Premium Gasoline ?

[CaptT820]

The oil industry would like you to believe that higher octane gas makes your engine run better, this is mostly a false claim. Some engines actually do require higher octane gas due to combustion ratio only. IF your car has a combustion ratio of 9.5:1 or lower then you do not need anything above 87 octane. My old Honda civic would even run on 86 octane if you could find it. My BMW has a combustion ratio of 10.1:1 and requires 89 octane. The only cars or engines that require 91 or 93 octane have high compression ratios or turbochargers.

For boats we are spoiled due to most of the marine gas being 92 octane and it also contains no ethanol (a whole other topic for another thread). The marine gas is only a 20% premium over pump and is worth every penny.

The 600-feet altitude it will have almost no effect on gasoline combustion. The air temperature will have much more of an effect at this altitude. You need to be at 3000-ft altitude or greater before the air pressure has an effect on combustion.

[Rich]

Originally Posted by CaptT820

For boats we are spoiled due to most of the marine gas being 92 octane and it also contains no ethanol (a whole other topic for another thread). The marine gas is only a 20% premium over pump and is worth every penny.

Which marina has this 92 octane ethanol free gas available on the lake?

As far as I am aware, most of the gas available at marinas on the lake is 89 octane gasoline that does have up to 10% ethanol.

[ishoot308]

Originally Posted by Rich

Which marina has this 92 octane ethanol free gas available on the lake?

As far as I am aware, most of the gas available at marinas on the lake is 89 octane gasoline that does have up to 10% ethanol.

Y Landing used to be the only place on the lake that had 91 octane. I heard (hearsay) they no longer carry it and only have 89 octane like everyone else...

Dan

[DesertDweller]

I believe Rich is correct. I am not aware of any marinas selling ethanol free gas. Unless you live in Alaska or Hawaii it's getting tough to find it. I have been told aviation fuel is ethanol free if you have access to an airport that services small planes.

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

[wadden]

The Mobil in Meredith has 93 octane. Great little gas station/convenience store. But not sure why most sell the 91.

[LIforrelaxin]

Originally Posted by CaptT820

For boats we are spoiled due to most of the marine gas being 92 octane and it also contains no ethanol (a whole other topic for another thread). The marine gas is only a 20% premium over pump and is worth every penny.

As others have stated this is false.... Marina's on the lake sell you 89 octane.... and most Marine engines specify its use.... Also there is no pump on the lake that is ethanol free... Most of them have pre-treated gas with additives to reduce the risk of ethanol, but that is the extent of it.