Octane Boost
Stellar HDF Member
Joined: Jan 2017
Posts: 2,673
Likes: 2,079
From: Massachusetts
Well non-ethanol I think is a lot better when you don't use the vehicle that often, then it is just one octane short of the 91 and since it is so humid here in Fl., (I already had a tank full of rust in my other bike using ethanol gas) it is a preventive measure and both of my bikes aren't pinging (my other bike actually calls for running on 87 Octane). That's why I use it, I was just wondering if an octane booster would help my ethanol free get to the 91 HD recommends. In my old 78 bike the 107 octane booster eliminated the pinging, and it was bad, it was a triple.
If you really wanted to, if you figure out what 8-10% (There are claims that %s are not always exactly 10%) of a gallon of gasoline was, and add that much distilled water to it and stir Wait a few minutes and let the alcohol absorb the water, you can pour off the separated mixture and be left with pure fuel.If you are bored!
Road Captain
Joined: Sep 2019
Posts: 689
Likes: 339
From: Dayton OH
All of jake's post is on point. The one thing it misses for an especially high compression air cooled engine in the heat is that the higher the octane number the more resistant it is to spark knock or pre detonation. Which is what we all want to avoid. So the best option depends on the scenario. Got an 11+ -1 engine that you are going to be running in the heat, in a parade, or racing, you want 93. Got a stock compression motor that you run when its cooler, in the evenings, in the fall. One that you don't spend much time at WOT or that might sit over the winter or that you are trying to get maximum mileage out of. You want the pure gas ie no ethanol added. Many fuel station don't have pure gas at all or only have it in 87 octane for weed whackers and such. Some stations around lakes marine areas race tracks have it in 90 octane. Sold as marine or rec for recreational fuel.
On a side note the ethanol part is made from corn under government ie taxpayer paid subsidy. Yes it takes from our food source. It according to always lieing government is supposed to make fuel cheaper. Well it does at the pump and is usually cheaper at 93 octane than 90 octane pure gas at the same station or 87 vs 87 octane. But you paid for that difference through taxes and you will get less miles per gallon out of it so is it really net cheaper. Highly unlikely. Last there is also a free app you can get on your phone called Pure Gas. It lists the fuel stations in your area according to GPS that also sell pure gas.
On a side note the ethanol part is made from corn under government ie taxpayer paid subsidy. Yes it takes from our food source. It according to always lieing government is supposed to make fuel cheaper. Well it does at the pump and is usually cheaper at 93 octane than 90 octane pure gas at the same station or 87 vs 87 octane. But you paid for that difference through taxes and you will get less miles per gallon out of it so is it really net cheaper. Highly unlikely. Last there is also a free app you can get on your phone called Pure Gas. It lists the fuel stations in your area according to GPS that also sell pure gas.
Road Warrior
Joined: Nov 2022
Posts: 1,539
Likes: 543
From: MN
Weed whackers and chainsaws also need premium gas, or at least 89 octane - their spark is set highly advanced. And god forbid - no ethanol! It washes down the cylinder walls and will burn up the motor on 2 strokes!
Stellar HDF Member
Joined: Jan 2017
Posts: 2,673
Likes: 2,079
From: Massachusetts
All of jake's post is on point. The one thing it misses for an especially high compression air cooled engine in the heat is that the higher the octane number the more resistant it is to spark knock or pre detonation. Which is what we all want to avoid. So the best option depends on the scenario. Got an 11+ -1 engine that you are going to be running in the heat, in a parade, or racing, you want 93. Got a stock compression motor that you run when its cooler, in the evenings, in the fall. One that you don't spend much time at WOT or that might sit over the winter or that you are trying to get maximum mileage out of. You want the pure gas ie no ethanol added. Many fuel station don't have pure gas at all or only have it in 87 octane for weed whackers and such. Some stations around lakes marine areas race tracks have it in 90 octane. Sold as marine or rec for recreational fuel.
On a side note the ethanol part is made from corn under government ie taxpayer paid subsidy. Yes it takes from our food source. It according to always lieing government is supposed to make fuel cheaper. Well it does at the pump and is usually cheaper at 93 octane than 90 octane pure gas at the same station or 87 vs 87 octane. But you paid for that difference through taxes and you will get less miles per gallon out of it so is it really net cheaper. Highly unlikely. Last there is also a free app you can get on your phone called Pure Gas. It lists the fuel stations in your area according to GPS that also sell pure gas.
On a side note the ethanol part is made from corn under government ie taxpayer paid subsidy. Yes it takes from our food source. It according to always lieing government is supposed to make fuel cheaper. Well it does at the pump and is usually cheaper at 93 octane than 90 octane pure gas at the same station or 87 vs 87 octane. But you paid for that difference through taxes and you will get less miles per gallon out of it so is it really net cheaper. Highly unlikely. Last there is also a free app you can get on your phone called Pure Gas. It lists the fuel stations in your area according to GPS that also sell pure gas.
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