Quote:
Originally Posted by jkv45
Are you using ethanol-free gas? If so, the product is of little benefit.
If I understand it correctly, it's designed for use with ethanol gas, and stops the phase separation and moisture collection that happens when ethanol is blended with gasoline.
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Traditional
Stabil has been around long before ethanol gas. It used to be primarily 2-propanol and was changed to mostly deodorized kerosene. This lowers the RVP - Reid vapour pressure property of gasoline so it evaporates slower. Rather than clogging up your carbs with dried gas over winter, it'll still be liquid by spring. Winter-blends of gas tend to be more volatile for easier evaporation and cleaner emissions on cold-starts in winter.
Newer
Stabil 360 is also mostly deodorized kerosene and does evaporation suppression. It also has a miscible polar compound that absorbs moisture faster than ethanol. And a stabilizer compound that counter-acts strongly oxidizing effect of the moisture-absorber.