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Adler's Antique Autos, Inc.
Author of "Notes from the Corrosion Lab"
801 NY Route 43, Stephentown, NY 12168
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Winter Storage Article

Effects of Gasoline Volatility on Vehicle Performance

Volatility Too Low Volatility Too High
Poor cold start High evaporative emissions/
canister overloaded and purge
Poor warm-up performance Hot-driveability problems/
vapor lock
Poor cool-weather driveability Fuel economy may deteriorate
Increased deposits
-combustion chamber
-spark plugs
Unequal fuel distribution in
carburated vehicles
Charts and tables for this article are taken from Changes in Gasoline II Technician's Manual, Downstream Alternatives Inc., 1995.