SWEPCO 501 Premium Diesel Fuel Improver is a powerful multi-function additive designed to restore performance and protect today's diesel engines—especially when running low-quality or ultra-low sulfur diesel fuels. It increases cetane for smoother, quieter combustion, reduces emissions, and protects injectors from wear and fouling. Whether you're managing over-the-road trucks, agricultural equipment, or off-road fleets, SWEPCO 501 keeps your diesel systems cleaner, longer, and running more efficiently.
Key Features:
Raises Cetane Numbers: Boosts ignition quality for quicker starts, smoother acceleration, and more complete combustion—especially in cold weather.
Cleans & Protects Injectors: Keeps injectors clean and removes existing deposits for better spray patterns and fuel efficiency.
Reduces Emissions Up to 42%: Independently tested using opacity methods—cleaner fuel burns mean cleaner air.
Minimizes Wear from ULSD: Reduces abrasive injector and pump wear by up to 26%, countering the low-lubricity of ultra-low sulfur diesel fuel.
Winter Formula Available: Improves cold flow and prevents gelling during cold starts and sub-freezing operation.
Performance Benefits:
Improves ignition quality in any diesel fuel
Improves fuel economy and reduces fuel-related maintenance
Reduces smoking, misfiring, knocking, and starting issues
Extends injector and pump life significantly
Enhances fuel storage stability and system cleanliness
Markets Served:
Over-the-Road Trucking & Fleets
Agriculture & Farming Equipment
Marine & Dockside Operations
Heavy Construction & Industrial Vehicles
Common Applications:
All diesel engine types: mobile, stationary, turbocharged
Fleet vehicles, long-haul rigs, school and transit buses
Tractors, harvesters, and other farm equipment
Mobile construction and off-road diesel machinery
Diesel-powered generators, cranes, compressors
CLEANER FUEL. QUIETER COMBUSTION. FEWER BREAKDOWNS. RUN SWEPCO 501 AND KEEP YOUR DIESEL DIALED IN.
