Hey guys. I could use the names of some easily available, walmart, autozone, fuel additives to boost octane and counter ethanol.

 

I have found, while out on a long trip across country on my High compression Hot build 2000 FXDS. When not able to get at least 91 octane, I would put a mix of diesel into the tank, using a little more than 40/1 mix... This made my bike run Better than when on 92 octane gas.. It didn't Ping-knock at all and i HAD to use 87 octane.. Careful IF you are using 02 sensors, as the oil mix will damage them....

I also did the same thing on a high compression sportster by using a Kerosene mix..

I took along a pint bottle of it incase of low octane problem..

signed....REDHEAD

 

REDHEAD Thanks. On another thread the fellow mentioned the 10% ethanol will be increasing to 15%. At 10% I can feel the difference. What I am asking is for are recomended ,easily obtainable, fuel additives that will boost octane and help with preformance.

 

Take a stroll through the Wally-World stores and automotive
parts stores and see whats on their shelves....
I'm sure someone makes an octane booster to fill your needs...
Any 'indy' shops around your area to ask a mechanic ??

 

The best way to protect the engine and help it run better on 15% eth is to get a tune or you can just let the O2 sensors do their job. Ethanol produces less btu's when you burn it. So instead of having 100% gasoline which the 14.7:1 A/F ratio is based on, you are combining it with the thinner alcohol mix that has a 7:1 A/F ratio. This means you need twice as much Ethanol when compared to gasoline to get the same burn. So just enrichen the A/F ratio and you will not have to worry about adding anything to the fuel. 13.6:1 A/F ratio will more than make up for the difference this is about what i am running at cruse and I have cooler engine temps and more throttle response.

 

Star Brite Startron is what I use. Read THIS. Readily available at several auto parts stores

 

Nicely said!

As you indicate, ethanol has no direct affect on octane, after all ethanol has a higher octane rating than petrol because it burns cooler. But does change effective afr which can cause lean conditions. Could correct by increasing octane, but better to tune.

 

I use Starbright Startron.

 

I use Marine Formula Sta-Bil. I would use Star Tron, but I can't find it around here.

 

Another Startron user here --- use it in all my vehicles ---- buy it by the quart as the directions indicate the quart size is a more concentrated solution so you only need to use 1 oz per 16 gals of gas.