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10 Best engine oil fluid additives of 2026

Save up to 16% off
  • Best Choice

    1

    Hot Shot's Secret Original Stiction Eliminator Oil Additive, 32 oz
    Hot Shot's Secret
    9.7
    Exceptional

    Hot Shot's Secret Original Stiction Eliminator Oil Additive, 32 oz

    16% Off
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  • Value for Money

    2

    Bar's Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair, 16.9oz, 1-Pack
    Bar's Leaks
    9.6
    Exceptional

    Bar's Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair, 16.9oz, 1-Pack

  • 3

    Rislone 4405 Hy-per Lube Zinc ZDDP Supplement, 1-Pack, 11 oz
    Rislone
    9.4
    Excellent

    Rislone 4405 Hy-per Lube Zinc ZDDP Supplement, 1-Pack, 11 oz

  • 4

    Rislone 4447 High Mileage Compression Repair with Ring Seal, 16.9 oz.
    Bar's Leaks
    9.3
    Excellent

    Rislone 4447 High Mileage Compression Repair with Ring Seal, 16.9 oz.

  • 5

    LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml
    Liqui Moly
    9.2
    Excellent

    LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml

    12% Off
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  • 6

    Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart
    LUCAS OIL
    9.1
    Excellent

    Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

    11% Off

  • 7

    LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020
    Liqui Moly
    9.0
    Excellent

    LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020

    11% Off

  • 8

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)
    Prolube
    8.9
    Very Good

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (1QT)

  • 9

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (6oz)
    Prolube
    8.8
    Very Good

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (6oz)

  • 10

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (16oz)
    Prolube
    8.7
    Very Good

    Prolube Oil Treatment - Engine Oil Additive for Gas & Diesel Engines - Reduces Wear, Noise, Vibration - Boosts Fuel Economy & Horsepower - Works on Transmissions & Differentials (16oz)

    • asin:B0DVT5763K
    • automotive fit type:‎Universal Fit
    • best sellers rank:#78 in Automotive (See Top 100 in Automotive) #1 in Engine & Oil Fluid Additives
    • brand:‎Prolube
    • customer reviews:4.6 4.6 out of 5 stars 524 ratings 4.6 out of 5 stars