SWEPCO 501 Premium Diesel Fuel Improver is a highly effective multi-function diesel fuel improver which improves the combustion characteristics of today's low quality diesel fuels and prevents formation of sludge, varnish and gum deposits which slowly rob diesel engines of performance. SWEPCO 501's unique formulation delivers quicker, cleaner, more complete combustion by increasing cetane numbers of today's fuels. Increases cetane number of any diesel fuel for quicker, smoother, quieter, more complete combustion Up to 42% cleaner exhaust emissions when measured by the opacity method Keeps injectors clean...even cleans up dirty injectors Reduces injector & injector pump wear caused by today's abrasive low sulfur fuels by as much as 26% Improves cold weather performance...lowers cold start temperatures & reduces warm-up time Reduces smoking, misfiring, & knocking Improves ignition quality of any diesel fuel Reduces regulated diesel exhaust emissions Improves fuel economy Keeps injectors clean for better fuel ignition Prolongs life of injectors and pumps Easier starting Improves storage stability Trucking Construction Automotive Marine All types of diesel engines Mobile construction equipment Over the road trucks Fleet operations     Southwestern Petroleum Corporation P.O. Box 961005 Fort Worth TX USA 76161-0005 Phone: (800) USSWEPCO (877-9372) FAX: (817) 877-4047 Copyright © 2003, Southwestern Petroleum Corp.