RE: coleman camp fuel
You will see plenty of threads on the subject with lots of pros and cons.
Personally - I love the stuff.
Pros - Great shelf life and wont gum the carb if stored long periods.
Virtually no smell at all. More pleasant smell when burnt. I mean my wife will even volunteer to buy a can or two if I need it (and thats saying something).
No needle changes needed to swap from gas - or back to gas.
No noticeable changes in performance - (though some claim a cooler motor - myself included). I find the motor better mannered but hard to say it is fuel or luck!!
Comes in a cool metal carry can.
Burns clean - no residue
Compatible with IV gas bags and all Gasoline rated hoses etc (best I have seen anyway).
End of the day - keeps the wife happy - if she is happy then I have nothing to worry about. Add to that the long shelf life - I certainly dont run every boat every year [&o]
Negatives -
Burns clean - no residue so you cannot read plug color when tuning carb (can tune on gas and then switch over to Coleman)
Prohibitively priced. Last I purchased it was $8.88/gallon
Not race legal (last I heard)
Not recommended for some motors (full mods, QD's etc)
Probably something else I am missing.