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.
$534.48Save 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...$534.48 -
Schaeffer 137CTPSC CarbonTreat Premium Summer (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
$716.76Save 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...$716.76 -
Schaeffer 137CTPS-004 CarbonTreat Premium Summer (4-Gallons)
Schaeffer Mfg Co.
$526.77Save 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...$526.77 -
Schaeffer 137CTPW-004 CarbonTreat Premium Winter (4-Gallons)
Schaeffer Mfg Co.
$431.38Save 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...$431.38 -
On Sale
Schaeffer 300ULSW-004 Arctic Shield (4-Gallons)
Schaeffer Mfg Co.
Now: $363.03Was: $465.81Save 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: $363.03Was: $465.81 -
On Sale
Schaeffer 137ULSW-004 Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
Now: $350.83Was: $478.25Save 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: $350.83Was: $478.25 -
On Sale
Schaeffer 137CTPWC CarbonTreat Premium Winter (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
Now: $572.80Was: $602.65Save 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: $572.80Was: $602.65 -
On Sale
Schaeffer 137SUM Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $411.14Was: $420.58Save 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: $411.14Was: $420.58 -
Schaeffer 137B Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
$397.14Save 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...$397.14 -
On Sale
Schaeffer 137CTPA-042 CarbonTreat Premium All Season (24-pints)
Schaeffer Mfg Co.
Now: $751.95Was: $944.90Save 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: $751.95Was: $944.90 -
Schaeffer 139A-004 SoyShield All Season Diesel (4-Gallons)
Schaeffer Mfg Co.
$335.61Save 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...$335.61 -
On Sale
Schaeffer 139A-042 SoyShield All Season Diesel (24-pints)
Schaeffer Mfg Co.
Now: $341.05Was: $436.08Save 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: $341.05Was: $436.08 -
Schaeffer 141-003 Bio-Treat Premium Diesel (2x2.5 Gallons)
Schaeffer Mfg Co.
$626.26Save 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...$626.26 -
On Sale
Schaeffer 137ND-004 Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $406.11Was: $470.96Save 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: $406.11Was: $470.96 -
On Sale
Schaeffer 137-042 Diesel Treat 2000 Ultra Low Sulfur (24-Pints)
Schaeffer Mfg Co.
Now: $409.45Was: $479.66Save 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: $409.45Was: $479.66 -
On Sale
Schaeffer 131-004 Neutra Fuel Stabilizer (4-Gallons)
Schaeffer Mfg Co.
Now: $274.09Was: $304.69Save 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: $274.09Was: $304.69 -
On Sale
Schaeffer 132-005 Moly EP Engine Oil Treatment (5-Gallons)
Schaeffer Mfg Co.
Now: $445.11Was: $520.64Save 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: $445.11Was: $520.64 -
On Sale
Schaeffer 132-023 Moly EP Engine Oil Treatment (24-Pints)
Schaeffer Mfg Co.
Now: $341.24Was: $400.68Save 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: $341.24Was: $400.68 -
On Sale
Schaeffer 301-004 Tank Dry Fuel Treatment (4-Gallons)
Schaeffer Mfg Co.
Now: $370.02Was: $486.53Save 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: $370.02Was: $486.53 -
On Sale
Schaeffer 285-013 Fuel Shock (12-Pints)
Schaeffer Mfg Co.
Now: $737.90Was: $789.09Save 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: $737.90Was: $789.09 -
On Sale
Schaeffer 285-004 Fuel Shock (4-Gallons)
Schaeffer Mfg Co.
Now: $778.42Was: $857.60Save 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: $778.42Was: $857.60 -
On Sale
Schaeffer 137ULSW-042 Diesel Treat 2000 Ultra Low Sulfur Winter (24-Pints)
Schaeffer Mfg Co.
Now: $442.23Was: $587.11Save 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: $442.23Was: $587.11 -
On Sale
Schaeffer 300ULSW-042 Arctic Shield (24-Pints)
Schaeffer Mfg Co.
Now: $354.03Was: $423.33Schaeffer'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: $354.03Was: $423.33 -
Schaeffer 284-012 Diesel Hotline (12-Quarts)
Schaeffer Mfg Co.
$287.78Save 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...$287.78 -
Schaeffer 131-021 Neutra Fuel Stabilizer (24-12oz Bottles)
Schaeffer Mfg Co.
$327.10Save 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),...$327.10