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Fuel and Oil Additives

Fuel and Oil Additives

Schaeffer's FUEL AND OIL ADDITIVES can increase fuel economy.

There are many reasons you should be using fuel and oil additives.  We have listed a few for you. 

  • remove carbon deposits from injectors
  • help prevent gelling
  • disperse water in fuel
  • improve cetane
  • increase fuel lubricity
  • fewer emissions
  • increased fuel economy

Here are some reviews from real customers: 

"Neutra improves your MPG. We have been a BIG Neutra fan ever since our mechanic poured a bottle in our early 90's Motorhome and our gas mileage improved. We use it in all our vehicles for better mileage and instead of Sta-Bil for long term storage." Diane C.

"Moly EP. I have higher mileage vehicles and have been using Moly EP for 3 years. It was recommended to me by a diesel mechanic. They use it in all their over the road trucks. I add a pint at every oil change. I was able to get 275,000 miles on my wife's Tahoe before we sold it." William B.

"CarbonTreat all season. The CarbonTreat is a wonderful product it keeps the fuel filter cleaner and longer." Cody 

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  • Schaeffer 5131 Extreme Marine Gasoline Fuel Additive (24-12oz bottles)

    Schaeffer 5131 Extreme Marine Gasoline Fuel Additive (24-12oz bottles)

    Schaeffer Mfg Co.

    $284.88
    NEW ITEM! (12 oz Bottles are same packaging as 131 Neutra) Schaeffer's 5131 Extreme Marine Gasoline Fuel Additive (24x12 oz case) is a highly concentrated, multifunctional ashless gasoline additive. It is specially formulated for use in all...
    $284.88
    Qty in Cart: 0
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    Price:
    $284.88
    Subtotal:
  • Schaeffer's 0132-006 Moly EP Engine Oil Treatment (6-Gallons)

    Schaeffer 132-006 Moly EP Engine Oil Treatment (6-Gallons)

    Schaeffer Mfg Co.

    $389.99
    Save 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
    Qty in Cart: 0
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    $389.99
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  • Schaeffer 0137CTPSC-005 CarbonTreat Premium Summer (Extra Cetane) Diesel Treatment (5-Gallon pail)

    Schaeffer 137CTPSC-005 CarbonTreat Premium Summer (Extra Cetane) (5-Gallons)

    Schaeffer Mfg Co.

    $522.99
    Save 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
    Qty in Cart: 0
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    Price:
    $522.99
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  • On Sale
    Schaeffer 0131C-004 SoyUltra Gasoline Additive (4-Gallon case)

    Schaeffer 131C-004 SoyUltra Gasoline Additive (4-Gallons)

    Schaeffer Mfg Co.

    Now: $299.22
    Was: $308.28
    Save 10% when you buy 3! Schaeffer's 131C SoyUltra® Gasoline Additive (4-Gallons) is a concentrated, multi-functional, ashless gasoline additive. It is specially formulated for use in all types of gasoline and ethanol blends. Designed to...
    Now: $299.22
    Was: $308.28
    Qty in Cart: 0
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    Now: $299.22
    Was: $308.28
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  • Schaeffer 0137CTPS-004 CarbonTreat Premium Summer Diesel Treatment (4-Gallon case)

    Schaeffer 137CTPS-004 CarbonTreat Premium Summer (4-Gallons)

    Schaeffer Mfg Co.

    $384.36
    Save 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
    Qty in Cart: 0
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    $384.36
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  • Schaeffer 0137CTPW-004 CarbonTreat Premium Winter Diesel Treatment (4-Gallon case)

    Schaeffer 137CTPW-004 CarbonTreat Premium Winter (4-Gallons)

    Schaeffer Mfg Co.

    $319.76
    Save 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...
    $319.76
    Qty in Cart: 0
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    Price:
    $319.76
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  • On Sale
    Schaeffer 0300ULSW-004 Arctic Shield + Ultra Low Sulfur Concentrate (4-Gallon case)

    Schaeffer 300ULSW-004 Arctic Shield (4-Gallons)

    Schaeffer Mfg Co.

    Now: $264.89
    Was: $339.88
    Save 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: $264.89
    Was: $339.88
    Qty in Cart: 0
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    Now: $264.89
    Was: $339.88
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  • On Sale
    Schaeffer 0137ULSW-004 Diesel Treat 2000 Ultra Low Sulfur Winter Premium (4-Gallon case)

    Schaeffer 137ULSW-004 Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)

    Schaeffer Mfg Co.

    Now: $255.99
    Was: $348.96
    Save 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: $255.99
    Was: $348.96
    Qty in Cart: 0
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    Now: $255.99
    Was: $348.96
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  • On Sale
    Schaeffer 0137CTPWC-005 CarbonTreat Premium Winter Diesel Treatment (Extra Cetane) (5-Gallon pail)

    Schaeffer 137CTPWC-005 CarbonTreat Premium Winter (Extra Cetane) (5-Gallons)

    Schaeffer Mfg Co.

    Now: $417.95
    Was: $439.73
    Save 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: $417.95
    Was: $439.73
    Qty in Cart: 0
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    Now: $417.95
    Was: $439.73
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  • On Sale
    Schaeffer 0137SUM-004 Diesel Treat 2000 Ultra Low Sulfur Summer (4-Gallon case)

    Schaeffer 137SUM-004 Diesel Treat 2000 Ultra Low Sulfur Summer (4-Gallons)

    Schaeffer Mfg Co.

    Now: $299.99
    Was: $306.88
    Save 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: $299.99
    Was: $306.88
    Qty in Cart: 0
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    Now: $299.99
    Was: $306.88
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  • Schaeffer 0137B-004 Diesel Treat 2000™ Ultra Low Sulfur All Season (4-Gallon case)

    Schaeffer 137B-004 Diesel Treat 2000 Ultra Low Sulfur Winter (4-Gallons)

    Schaeffer Mfg Co.

    $289.78
    Save 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
    Qty in Cart: 0
    Quantity:
    Price:
    $289.78
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  • On Sale
    Schaeffer 0137CTPA-042 CarbonTreat™ Premium All Season Diesel Treatment (24-pint case)

    Schaeffer 137CTPA-042 CarbonTreat Premium All Season (24-pints)

    Schaeffer Mfg Co.

    Now: $548.67
    Was: $689.46
    Save 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: $548.67
    Was: $689.46
    Qty in Cart: 0
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    Price:
    Now: $548.67
    Was: $689.46
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  • Schaeffer 0139A-004 SoyShield All Season Diesel Fuel Additive (4-Gallon case)

    Schaeffer 139A-004 SoyShield All Season Diesel (4-Gallons)

    Schaeffer Mfg Co.

    $244.88
    Save 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
    Qty in Cart: 0
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    Price:
    $244.88
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  • On Sale
    Schaeffer 0139A-042 SoyShield All Season Diesel Fuel Additive (24-pint case)

    Schaeffer 139A-042 SoyShield All Season Diesel (24-pints)

    Schaeffer Mfg Co.

    Now: $248.85
    Was: $318.19
    Save 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: $248.85
    Was: $318.19
    Qty in Cart: 0
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    Price:
    Now: $248.85
    Was: $318.19
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  • Schaeffer 0141-003 Bio-Treat Premium Diesel Fuel Treatment (2x2.5 Gallons case)

    Schaeffer 141-003 Bio-Treat Premium Diesel (2x2.5 Gallons)

    Schaeffer Mfg Co.

    $456.96
    Save 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
    Qty in Cart: 0
    Quantity:
    Price:
    $456.96
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  • On Sale
    Schaeffer 0137ND-004 Diesel Treat 2000™ Ultra Low Sulfur (4-Gallon case)

    Schaeffer 137ND-004 Diesel Treat 2000 Ultra Low Sulfur (4-Gallons)

    Schaeffer Mfg Co.

    Now: $296.32
    Was: $343.64
    Save 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: $296.32
    Was: $343.64
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $296.32
    Was: $343.64
    Subtotal:
  • On Sale
    Schaeffer 0137-042 Diesel Treat 2000™ Ultra Low Sulfur (24-Pint case)

    Schaeffer 137-042 Diesel Treat 2000 Ultra Low Sulfur (24-Pints)

    Schaeffer Mfg Co.

    Now: $298.76
    Was: $349.99
    Save 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: $298.76
    Was: $349.99
    Qty in Cart: 0
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    Price:
    Now: $298.76
    Was: $349.99
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  • On Sale
    Schaeffer 0131-004 Neutra™ Fuel Stabilizer (4-Gallon case)

    Schaeffer 131-004 Neutra Fuel Stabilizer (4-Gallons)

    Schaeffer Mfg Co.

    Now: $199.99
    Was: $222.32
    Save 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: $199.99
    Was: $222.32
    Qty in Cart: 0
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    Now: $199.99
    Was: $222.32
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  • On Sale
    Schaeffer 0132-005 Moly EP Engine Oil Treatment (5-Gallon pail)

    Schaeffer 132-005 Moly EP Engine Oil Treatment (5-Gallons)

    Schaeffer Mfg Co.

    Now: $324.78
    Was: $379.89
    Save 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: $324.78
    Was: $379.89
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $324.78
    Was: $379.89
    Subtotal:
  • On Sale
    Schaeffer 0132-023 Moly EP Engine Oil Treatment (24-Pint case)

    Schaeffer 132-023 Moly EP Engine Oil Treatment (24-Pints)

    Schaeffer Mfg Co.

    Now: $248.99
    Was: $292.36
    Save 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: $248.99
    Was: $292.36
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $248.99
    Was: $292.36
    Subtotal:
  • On Sale
    Schaeffer 0301-004 Tank Dry Fuel Treatment (4-Gallon case)

    Schaeffer 301-004 Tank Dry Fuel Treatment (4-Gallons)

    Schaeffer Mfg Co.

    Now: $269.99
    Was: $355.00
    Save 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: $269.99
    Was: $355.00
    Qty in Cart: 0
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    Now: $269.99
    Was: $355.00
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  • On Sale
    Schaeffer 0285-013 Diesel Fuel Shock (12-pint case)

    Schaeffer 285-013 Fuel Shock (12-Pints)

    Schaeffer Mfg Co.

    Now: $538.42
    Was: $575.77
    Save 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: $538.42
    Was: $575.77
    Qty in Cart: 0
    Quantity:
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    Now: $538.42
    Was: $575.77
    Subtotal:
  • On Sale
    Schaeffer 0285-004 Diesel Fuel Shock (4-Gallon case)

    Schaeffer 285-004 Fuel Shock (4-Gallons)

    Schaeffer Mfg Co.

    Now: $567.98
    Was: $625.76
    Save 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: $567.98
    Was: $625.76
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $567.98
    Was: $625.76
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  • On Sale
    Schaeffer 0137ULSW-042 Diesel Treat 2000 Ultra Low Sulfur Winter Premium (24-Pint case)

    Schaeffer 137ULSW-042 Diesel Treat 2000 Ultra Low Sulfur Winter (24-Pints)

    Schaeffer Mfg Co.

    Now: $322.68
    Was: $428.39
    Save 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: $322.68
    Was: $428.39
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $322.68
    Was: $428.39
    Subtotal:
  • On Sale
    Schaeffer 0300ULSW-042 Arctic Shield + Ultra Low Sulfur Concentrate (24-Pint case)

    Schaeffer 300ULSW-042 Arctic Shield (24-Pints)

    Schaeffer Mfg Co.

    Now: $258.32
    Was: $308.89
    Schaeffer'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: $258.32
    Was: $308.89
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $258.32
    Was: $308.89
    Subtotal:
  • Schaeffer 0284-012 Diesel Hotline (12-Quart case)

    Schaeffer 284-012 Diesel Hotline (12-Quarts)

    Schaeffer Mfg Co.

    $209.98
    Save 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
    Qty in Cart: 0
    Quantity:
    Price:
    $209.98
    Subtotal:
  • Schaeffer 0131-021 Neutra™ Fuel Stabilizer (24-12oz case)

    Schaeffer 131-021 Neutra Fuel Stabilizer (24-12oz Bottles)

    Schaeffer Mfg Co.

    $238.67
    Save 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
    Qty in Cart: 0
    Quantity:
    Price:
    $238.67
    Subtotal:
  • Schaeffer 0131C-021 SoyUltra Gasoline Additive (24-12oz. case)

    Schaeffer 131C-021 SoyUltra Gasoline Additive (24-12oz Bottles)

    Schaeffer Mfg Co.

    $284.32
    Save 8% when you buy 3! Schaeffer's 131C SoyUltra® Gasoline Additive (24-12 oz. bottles) is a concentrated, multi-functional, ashless gasoline additive. It is specially formulated for use in all types of gasoline and ethanol blends...
    $284.32
    Qty in Cart: 0
    Quantity:
    Price:
    $284.32
    Subtotal:
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