Ok guys this is getting better every time, thanks. It rained this weekend so I didn't get a chance to try my weede with all the possible combinations, being a chemist by profession
I have some anhydrous ethyl ether, I will give it a try in a 5% mixture and include it on my table and see how it turns out, so to summarize the mixtures to be tried they will be as follows:
a.- Gasoline + oil (synthetic) 50:1 ratio.
b.-Gasoline 90%, methanol 10%, oil in a 50:1 ratio
c.- Gasoline 85%, methanol 15%, oil in a 50:1 ratio
d.- Gasoline85%, methanol 10%, Acetone 5%, oil in a50:1 ratio
e.- Gasoline 80%, metanol 15%, Acetone 5%, oil in a 50:1 ratio
f.- Gasoline 95%, ether 5%, oil in a 50:1 ratio
g.- Gasoline 85%, Methanol 10%, ether 5%, oil in a 50:1 ratio
h.- Gasoline 80%, methanol 15%, ether 5%, oil 50:1 ratio

I will develop a table for the fueld used vs the rpm's obtained, being that I live by the beach this readings will be at sea level and I wil be using a weedeater 18 cc engine with a 15x6 or maybe a 14x6 master airscrew prop.
Until then I will keep in touch hopeing that the weather conditions for this weekend are favorable, thank you all for your valuable information and lets see if something good comes out of this.