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10 Best gear oils of 2026

Save up to 27% off
  • Best Choice

    1

    Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 Quart Pouch
    Valvoline
    9.8
    Exceptional

    Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 Quart Pouch

    16% Off
    • product dimensions: 4.25 x 3.38 x 12 inches
    • recommended uses for product: Automotive
    • package information: Pouch
    • item weight: 1.83 pounds
    • specific uses for product: Conventional and limited slip differentials and non-synchronized manual transmissions where API GL-5 or API GL-4 fluid is specified
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  • Value for Money

    2

    Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon
    Lucas Oil
    9.5
    Excellent

    Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon

    • product dimensions:‎4 x 6 x 6 inches
    • recommended uses for product:‎Gear Oil
    • package information:‎Bottle
    • item weight:‎0.01 ounces
    • specific uses for product:N/A

  • 3

    Valvoline Daily Protection 80W-90 Gear Oil 1 Quart
    Valvoline
    9.3
    Excellent

    Valvoline Daily Protection 80W-90 Gear Oil 1 Quart

    25% Off
    • product dimensions:‎3.38 x 3.38 x 11.6 inches
    • recommended uses for product:‎Automotive
    • package information:‎Bottle
    • item weight:‎0.01 ounces
    • specific uses for product:‎Heavy-duty applications, high speed and load conditions

  • 4

    Valvoline Flexfill SAE 75W-90 Full Synthetic Gear Oil 1 QT, Case of 4
    Valvoline
    9.2
    Excellent

    Valvoline Flexfill SAE 75W-90 Full Synthetic Gear Oil 1 QT, Case of 4

    • product dimensions:‎13.1 x 9.37 x 4.12 inches
    • recommended uses for product:‎Automotive
    • package information:‎Pouch
    • item weight:‎7.59 pounds
    • specific uses for product:‎Automotive differentials and transmissions

  • 5

    Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch
    Valvoline
    9.1
    Excellent

    Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

    15% Off
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  • 6

    Valvoline SynPower SAE 75W-90 Full Synthetic Gear Oil 1 GA
    Valvoline
    8.8
    Very Good

    Valvoline SynPower SAE 75W-90 Full Synthetic Gear Oil 1 GA

  • 7

    Quicksilver SAE 90 High Performance Gear Lube for Outboards and Sterndrives, 32 oz
    Quicksilver
    8.7
    Very Good

    Quicksilver SAE 90 High Performance Gear Lube for Outboards and Sterndrives, 32 oz

    27% Off
    • product dimensions: 7.62 x 8.75 x 9.87 inches
    • recommended uses for product: Lube
    • package information: Bottle
    • item weight: 0.4 ounces
    • specific uses for product:N/A

  • 8

    Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 2 Quarts
    Red Line
    8.6
    Very Good

    Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 2 Quarts

  • 9

    Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon
    Lucas Oil
    8.4
    Good

    Lucas Oil 10045 Heavy Duty SAE 85W-140 Gear Oil - 1 Gallon

    12% Off

  • 10

    Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon
    Lucas Oil
    8.3
    Good

    Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon

    • product dimensions: 4 x 6 x 6 inches
    • recommended uses for product: Automotive
    • package information: Bottle
    • item weight: 7.35 pounds
    • specific uses for product: High temperature applications, Heavy duty or high performance use