Diesel Additives
Schaeffer’s fuel additives are a great way to boost engine performance.
Schaeffer will protect your diesel engine is 365 days a year. These additives:
- Can increase the cetane rating up to 4 points.
- Clean-up and help keep clean the Injectors .
- Clean up gums and varnish found in todays ULSD fuel.
- Provide increased fuel economy and maintain engine power.
- Reduce emissions and black smoke.
- Add lubricity to provide protection for injectors and fuel pumps.
- Helps reduce oxidation during extended storage.
- Will give rust and corrosion protection to your fuel system.
- And much more!
At pennies per gallon, can you afford not to?
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Schaeffer 132-006 Moly EP Engine Oil Treatment (6-Gallons)
Schaeffer Mfg Co.
$533.55Save 10% when you buy 2! Schaeffer's 132 Moly EP (Extreme Pressure) Engine Oil Treatment (6x1 gallon case) is a highly fortified extreme pressure engine oil treatment. Moly EP Oil Treatment contains an advanced specialized additive...$533.55 -
Schaeffer 137CTPSC CarbonTreat Premium Summer (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
$715.50Save 10% when you buy 2! Schaeffer's 137CTPSC CarbonTreat™ Premium Summer Diesel Treatment with EXTRA CETANE (5-Gallons) is a multi functional, ultra-low sulfur compliant diesel fuel additive. It is formulated to prevent and control the...$715.50 -
Schaeffer 137CTPS-004 CarbonTreat Premium Summer (4-Gallons)
Schaeffer Mfg Co.
$525.84Save 10% when you buy 2! Schaeffer's 137CTPS CarbonTreat™ Premium Summer Diesel Treatment (4-Gallons) is a multi functional, ultra-low sulfur compliant diesel fuel additive. It is formulated to prevent and control the formation of asphaltenes...$525.84 -
Schaeffer 137CTPW-004 CarbonTreat Premium Winter (4-Gallons)
Schaeffer Mfg Co.
$430.62Save 10% when you buy 3! Schaeffer's 137CTPW CarbonTreat™ Premium Winter Diesel Treatment (4-Gallons) is a multifunctional, ultra-low sulfur compliant diesel fuel additive. It is formulated to prevent and control the formation...$430.62 -
On Sale
Schaeffer 300ULSW-004 Arctic Shield (4-Gallons)
Schaeffer Mfg Co.
Now: $362.40Was: $464.99Save 10% when you buy 3! Schaeffer's 300ULSW Arctic Shield + Ultra Low Sulfur (4-Gallons) is a highly concentrated ashless diesel fuel additive. It is specifically formulated to provide Ultra Low Sulfur Diesel Fuel with maximum cold temperature...Now: $362.40Was: $464.99 -
On Sale
Schaeffer 137ULSW-004 Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
Now: $350.22Was: $477.41Save 10% when you buy 3! Schaeffer's 137ULSW Diesel Treat 2000 Ultra Low Sulfur Winter Premium (4-Gallons) fuel additive is specially formulated to provide diesel fuel with maximum cold temperature protection against fuel gelling, waxing and...Now: $350.22Was: $477.41 -
On Sale
Schaeffer 137CTPWC CarbonTreat Premium Winter (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
Now: $571.80Was: $601.59Save 10% when you buy 2! Schaeffer's 137CTPWC CarbonTreat™ Premium Winter Diesel Treatment with EXTRA CETANE (5-Gallons) is a multifunctional, ultra-low sulfur compliant diesel fuel additive. It is formulated to prevent and...Now: $571.80Was: $601.59 -
On Sale
Schaeffer 137SUM Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $410.42Was: $419.84Save 10% when you buy 3! Schaeffer 137SUM Diesel Treat 2000 Ultra Low Sulfur Summer (4-Gallons) is: multi-functional, ultra low sulfur compliant, all season, economical, premium diesel fuel additive. It is specifically formulated to...Now: $410.42Was: $419.84 -
Schaeffer 137B Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
$396.45Save 10% when you buy 3! Schaeffer's 137B Diesel Treat 2000™ Ultra Low Sulfur Winter (4-Gallons) is a multi-functional, ashless, ALL SEASON (INCLUDING WINTER) fuel additive. It is specially formulated for use with all types of...$396.45 -
On Sale
Schaeffer 137CTPA-042 CarbonTreat Premium All Season (24-pints)
Schaeffer Mfg Co.
Now: $750.64Was: $943.25Save 10% when you buy 2! Schaeffer's 137CTPA CarbonTreat™ Premium All Season Diesel Treatment (24-Pints) is a multi-functional, ultra-low sulfur compliant diesel fuel additive. It is formulated to prevent and control the formation of...Now: $750.64Was: $943.25 -
Schaeffer 139A-004 SoyShield All Season Diesel (4-Gallons)
Schaeffer Mfg Co.
$335.02Save 10% when you buy 4! Schaeffer's 139A SoyShield® All Season Diesel Fuel Additive (4 Gallons) is a concentrated multi-functional premium diesel fuel additive. It is specially formulated for use in all types of diesel, especially low...$335.02 -
On Sale
Schaeffer 139A-042 SoyShield All Season Diesel (24-pints)
Schaeffer Mfg Co.
Now: $340.45Was: $435.32Save 10% when you buy 3! Schaeffer's 139A SoyShield® All Season Diesel Fuel Additive (24 Pints) is a concentrated multi-functional premium diesel fuel additive. It is specially formulated for use in all types of diesel, especially low...Now: $340.45Was: $435.32 -
Schaeffer 141-003 Bio-Treat Premium Diesel (2x2.5 Gallons)
Schaeffer Mfg Co.
$625.17Save 10% when you buy 2! Schaeffer's 141 Bio-Treat Premium Diesel Fuel Treatment (2x2.5-Gallons) is a multi-functional biodiesel fuel additive. It is specially formulated to provide stability and control of many of the problems...$625.17 -
On Sale
Schaeffer 137ND-004 Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $405.40Was: $470.13Save 10% when you buy 3! Schaeffer's 137ND Diesel Treat 2000™ Ultra Low Sulfur (4-Gallons) is an ashless, all-season fuel additive. It is formulated for use with all types of diesel fuel, especially low sulfur and ultra low...Now: $405.40Was: $470.13 -
On Sale
Schaeffer 137-042 Diesel Treat 2000 Ultra Low Sulfur (24-Pints)
Schaeffer Mfg Co.
Now: $408.73Was: $478.82Save 8% when you buy 3! Schaeffer's 137 Diesel Treat 2000™ Ultra Low Sulfur (24-Pints) is an ashless, all-season fuel additive. It is formulated for use with all types of diesel fuel, especially low sulfur and ultra low sulfur...Now: $408.73Was: $478.82 -
On Sale
Schaeffer 131-004 Neutra Fuel Stabilizer (4-Gallons)
Schaeffer Mfg Co.
Now: $273.61Was: $304.16Save 10% when you buy 5! Schaeffer's 131 Neutra™ Fuel Stabilizer (4-Gallons) is a highly concentrated, multi-functional, ashless fuel stabilizer. It is specially formulated for use in all grades of gasoline (including ethanol-blends), as...Now: $273.61Was: $304.16 -
On Sale
Schaeffer 132-005 Moly EP Engine Oil Treatment (5-Gallons)
Schaeffer Mfg Co.
Now: $444.33Was: $519.73Save 10% when you buy 3! Schaeffer's 132 Moly EP (Extreme Pressure) Engine Oil Treatment (5-gallons) is a highly fortified extreme pressure engine oil treatment. Moly EP Oil Treatment contains an advanced specialized additive package. The...Now: $444.33Was: $519.73 -
On Sale
Schaeffer 132-023 Moly EP Engine Oil Treatment (24-Pints)
Schaeffer Mfg Co.
Now: $340.64Was: $399.98Save 8% when you buy 3! Schaeffer's 132 Moly EP (Extreme Pressure) Engine Oil Treatment (24-pints) is a highly fortified extreme pressure engine oil treatment. Moly EP Oil Treatment contains an advanced specialized additive package. The...Now: $340.64Was: $399.98 -
On Sale
Schaeffer 301-004 Tank Dry Fuel Treatment (4-Gallons)
Schaeffer Mfg Co.
Now: $369.37Was: $485.68Save 10% when you buy 3! Schaeffer's 301 Tank Dry Fuel Treatment (4-Gallons) is a moisture inhibiting fuel additive that is formulated for use in ALL types of fuels. It can be used in bio-diesel, gasoline and ethanol blends. When...Now: $369.37Was: $485.68 -
On Sale
Schaeffer 285-013 Fuel Shock (12-Pints)
Schaeffer Mfg Co.
Now: $736.61Was: $787.71Save 10% when you buy 2! Schaeffer's 285 Diesel Fuel Shock (12-Pints) is a: dual phase, oil soluble, water soluble, potent broad-spectrum biocide. It is designed to kill, prevent and control bacterial and fungal growth that can occur...Now: $736.61Was: $787.71 -
On Sale
Schaeffer 285-004 Fuel Shock (4-Gallons)
Schaeffer Mfg Co.
Now: $777.05Was: $856.10Save 10% when you buy 2! Schaeffer's 285 Diesel Fuel Shock (4-Gallons) is a: dual phase, oil soluble, water soluble, potent broad-spectrum biocide. It is designed to kill, prevent and control bacterial and fungal growth that can occur...Now: $777.05Was: $856.10 -
On Sale
Schaeffer 137ULSW-042 Diesel Treat 2000 Ultra Low Sulfur Winter (24-Pints)
Schaeffer Mfg Co.
Now: $441.46Was: $586.08Save 10% when you buy 2! Schaeffer's 137ULSW Diesel Treat 2000 Ultra Low Sulfur Winter Premium (24-Pints) fuel additive is specially formulated to provide diesel fuel with maximum cold temperature protection against fuel gelling, waxing and...Now: $441.46Was: $586.08 -
On Sale
Schaeffer 300ULSW-042 Arctic Shield (24-Pints)
Schaeffer Mfg Co.
Now: $353.41Was: $422.59Schaeffer's 300ULSW Arctic Shield + Ultra Low Sulfur (24-Pints) is a highly concentrated ashless diesel fuel additive. It is specifically formulated to provide Ultra Low Sulfur Diesel Fuel with maximum cold temperature protection against fuel...Now: $353.41Was: $422.59 -
Schaeffer 284-012 Diesel Hotline (12-Quarts)
Schaeffer Mfg Co.
$287.27Save 10% when you buy 4! Schaeffer's 0284-012 Diesel Hotline (12-Quarts) is an emergency treatment for gelled diesel fuel. This quick-acting additive dissolves gelled diesel fuel back into solution and returns the flow in 20 minutes. It is...$287.27 -
Schaeffer 131-021 Neutra Fuel Stabilizer (24-12oz Bottles)
Schaeffer Mfg Co.
$326.52Save 10% when you buy 3! Schaeffer's 131 Neutra™ Fuel Stabilizer (24-12 oz. bottles) is a highly concentrated, multi-functional, ashless fuel stabilizer. It is specially formulated for use in all grades of gasoline (including ethanol-blends),...$326.52