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.
$389.99Save 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...$389.99 -
Schaeffer 137CTPSC CarbonTreat Premium Summer (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
$522.99Save 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...$522.99 -
Schaeffer 137CTPS-004 CarbonTreat Premium Summer (4-Gallons)
Schaeffer Mfg Co.
$384.36Save 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...$384.36 -
Schaeffer 137CTPW-004 CarbonTreat Premium Winter (4-Gallons)
Schaeffer Mfg Co.
$314.76Save 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...$314.76 -
Schaeffer 300ULSW-004 Arctic Shield (4-Gallons)
Schaeffer Mfg Co.
Now: $264.89Was: $339.88Save 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: $264.89Was: $339.88 -
Schaeffer 137ULSW-004 Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
Now: $255.99Was: $348.96Save 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: $255.99Was: $348.96 -
Schaeffer 137CTPWC CarbonTreat Premium Winter (Extra Cetane) (5-Gallons)
Schaeffer Mfg Co.
Now: $417.95Was: $439.73Save 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: $417.95Was: $439.73 -
Schaeffer 137SUM Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $299.99Was: $306.88Save 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: $299.99Was: $306.88 -
Schaeffer 137B Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)
Schaeffer Mfg Co.
$289.78Save 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...$289.78 -
Schaeffer 137CTPA-042 CarbonTreat Premium All Season (24-pints)
Schaeffer Mfg Co.
Now: $548.67Was: $689.46Save 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: $548.67Was: $689.46 -
Schaeffer 139A-004 SoyShield All Season Diesel (4-Gallons)
Schaeffer Mfg Co.
$244.88Save 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...$244.88 -
Schaeffer 139A-042 SoyShield All Season Diesel (24-pints)
Schaeffer Mfg Co.
Now: $248.85Was: $318.19Save 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: $248.85Was: $318.19 -
Schaeffer 141-003 Bio-Treat Premium Diesel (2x2.5 Gallons)
Schaeffer Mfg Co.
$456.96Save 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...$456.96 -
Schaeffer 137ND-004 Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)
Schaeffer Mfg Co.
Now: $296.32Was: $343.64Save 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: $296.32Was: $343.64 -
Schaeffer 137-042 Diesel Treat 2000 Ultra Low Sulfur (24-Pints)
Schaeffer Mfg Co.
Now: $298.76Was: $349.99Save 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: $298.76Was: $349.99 -
Schaeffer 131-004 Neutra Fuel Stabilizer (4-Gallons)
Schaeffer Mfg Co.
Now: $199.99Was: $222.32Save 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: $199.99Was: $222.32 -
Schaeffer 132-005 Moly EP Engine Oil Treatment (5-Gallons)
Schaeffer Mfg Co.
Now: $324.78Was: $379.89Save 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: $324.78Was: $379.89 -
Schaeffer 132-023 Moly EP Engine Oil Treatment (24-Pints)
Schaeffer Mfg Co.
Now: $248.99Was: $292.36Save 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: $248.99Was: $292.36 -
Schaeffer 301-004 Tank Dry Fuel Treatment (4-Gallons)
Schaeffer Mfg Co.
Now: $269.99Was: $355.00Save 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: $269.99Was: $355.00 -
Schaeffer 285-013 Fuel Shock (12-Pints)
Schaeffer Mfg Co.
Now: $538.42Was: $575.77Save 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: $538.42Was: $575.77 -
Schaeffer 285-004 Fuel Shock (4-Gallons)
Schaeffer Mfg Co.
Now: $567.98Was: $625.76Save 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: $567.98Was: $625.76 -
Schaeffer 137ULSW-042 Diesel Treat 2000 Ultra Low Sulfur Winter (24-Pints)
Schaeffer Mfg Co.
Now: $322.68Was: $428.39Save 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: $322.68Was: $428.39 -
Schaeffer 300ULSW-042 Arctic Shield (24-Pints)
Schaeffer Mfg Co.
Now: $258.32Was: $308.89Schaeffer'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: $258.32Was: $308.89 -
Schaeffer 284-012 Diesel Hotline (12-Quarts)
Schaeffer Mfg Co.
$209.98Save 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...$209.98 -
Schaeffer 131-021 Neutra Fuel Stabilizer (24-12oz Bottles)
Schaeffer Mfg Co.
$238.67Save 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),...$238.67