Mothballs and Gasoline
Does adding naphthalene (mothballs) to gasoline increase
the octane rating?
The info comes from
Yes, mothballs will slightly assist the octane rating of gasoline. HOWEVER, in
that grain of truth there lurks the potential for disaster. One must use very
few mothballs (naphthalene only) because the ratio of carbon to hydrogen in
the molecules makes for a very dirty burning fuel. Too many mothballs and your
engine will load up with carbon deposits -- very bad news in the performance
Also DO NOT mistakenly use moth crystals (paradichlorobenzene). The chlorine
atoms in this material becomes HCl upon combustion. Hydrochloric acid (HCl) is
very destructive to engine internals.
Finally, unless your engine is high compression and in need of high octane
fuel, enhancing the octane rating of the fuel over what is required is simply
a waste of money. High octane fuel burned in an engine designed for lower
octane fuel does not increase engine power.
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Update: June 2012