Schaeffer 137SUM Diesel Treat 2000 Ultra Low Sulfur | 4-GC

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Less than 2 cents per gallon! 

Schaeffer's 137SUM Diesel Treat 2000 Ultra Low Sulfur Summer (4-Gallon Case) 

This premium, multi-functional summer diesel fuel additive is designed to do more than protect your engine — it actively improves how it performs. Whether you're running a fleet, farming, contracting, or logging serious highway miles, this 4-gallon case delivers professional-grade results at an economical price per treated gallon.

Formulated with advanced detergent chemistry and backed by the rigorous Peugeot DW-10 Injector Deposit Test, Diesel Treat 2000™ delivers clean-up and keep-clean performance throughout the entire fuel system. Here's what it does for you:

• Improved fuel efficiency & mileage — Boosts cetane levels for faster, more complete combustion, so you go farther on every gallon.
• Increased horsepower — More efficient combustion puts more power to the wheels, whether you're hauling heavy loads or pushing hard on the highway.
• Cleans & protects fuel injectors — Removes existing deposits and prevents new ones from forming, restoring optimal spray patterns for a cleaner, more efficient burn.
• Enhanced fuel lubricity — Reduces wear on injectors and fuel pumps, extending the life of critical engine components.
• Moisture & corrosion protection — Fights water contamination in the fuel system to prevent corrosion, microbial growth, and fuel line issues.
• Improved fuel stability — Keeps diesel fresh during storage or extended use, so it's ready to perform when you need it.
• Reduced emissions — A cleaner, more complete burn means fewer harmful exhaust emissions — better for your engine and the environment.

Fully compliant with ultra low sulfur diesel standards and safe for all modern diesel engines and emissions systems. The 4-gallon size is the smart buy for fleet operators, farmers, contractors, and high-mileage drivers who want consistent protection and the best value per treated gallon.

TREATMENT RATIO: One gallon of 137SUM Diesel Treat 2000™ Ultra Low Sulfur to every 4000 gallons of diesel fuel.

Do you need help choosing the correct Schaeffer fuel additive? READ THIS!

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