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Gasoline Additives

Gasoline Additives

Schaeffer’s 131C SoyUltra® is a concentrated ashless gasoline additive.

Specially formulated for use in all types of gasoline and ethanol blends used in new and old two-stroke and four-stroke gasoline-powered vehicles.

SoyUltra® is made from soybean oil. It contains an additive package with friction modifying and detergency properties. This unique blend provides excellent wear protection for fuel injectors and fuel pumps – especially engines burning gasoline that’s low sulfur, reformulated, oxygenated or ethanol blend. 

Schaeffer's Neutra™ is a highly concentrated, multi-functional, ashless fuel stabilizer. 

Specially formulated for use in all grades of gasoline (including ethanol-blended gasoline), as well as all types of diesel fuel and biodiesel fuels.

Schaeffer’s Neutra™ provides impressive cleanliness to fuel lines, tanks, pumps, injectors, and carburetors. Schaeffer’s Neutra™ disperses existing deposits throughout the fuel system, safely removing them to the combustion chamber where they can be burned cleanly and completely.

Here are some real reviews from real customers:

"Best gas additive I have found. I have been using this in a 5.4 Ford and it runs smoother with improved fuel mileage. My lawnmower was running a bit rough so I added a few drops and within a 1/4 tank of fuel it was running smoother." Garry H.

"Great product! Use it on my generators, vehicles, stuff works great, you can really tell the difference." Raul V. 

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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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    $284.88
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  • 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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  • 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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    Price:
    Now: $299.22
    Was: $308.28
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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
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    Now: $324.78
    Was: $379.89
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  • 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
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    Now: $248.99
    Was: $292.36
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  • 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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  • 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
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  • 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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