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10 Best synthetic engine oils of 2026

Save up to 26% off
  • Best Choice

    1

    Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-30, 6-pack of 1 quarts
    Mobil
    9.9
    Exceptional

    Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-30, 6-pack of 1 quarts

    21% Off
    • product dimensions: 2.43 x 4.35 x 9.1 inches
    • vehicle service type: Car, Truck
    • item weight: 2 pounds
    • special features: GM 6094M, GM dexos1:GEN2 Licensed, HONDA/ACURA HTO-06, ILSAC GF-6A, GM 4718M
    • item model number: Extended Performance
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  • Value for Money

    2

    Valvoline Extended Protection Full Synthetic Motor Oil SAE 0W-20 5 QT
    Valvoline
    9.8
    Exceptional

    Valvoline Extended Protection Full Synthetic Motor Oil SAE 0W-20 5 QT

    26% Off
    • product dimensions: 8.22 x 4.6 x 12.66 inches
    • vehicle service type:N/A
    • item weight: 9.28 pounds
    • special features: ULTIMATE PROTECTION AGAINST the four main causes of engine breakdown: wear, friction, heat and deposits
    • item model number: 891674

  • 3

    Mobil 1 Advanced Full Synthetic Motor Oil 5W-30, 5 Quart
    Mobil
    9.7
    Exceptional

    Mobil 1 Advanced Full Synthetic Motor Oil 5W-30, 5 Quart

  • 4

    Valvoline Advanced Full Synthetic SAE 0W-20 Motor Oil 5 QT
    Valvoline
    9.5
    Excellent

    Valvoline Advanced Full Synthetic SAE 0W-20 Motor Oil 5 QT

    25% Off

  • 5

    Valvoline MaxLife High Mileage Full Synthetic 5W-20 Motor Oil 5 Quart
    Valvoline
    9.4
    Excellent

    Valvoline MaxLife High Mileage Full Synthetic 5W-20 Motor Oil 5 Quart

    25% Off
  • See Today’s Deals & Prices

  • 6

    Castrol GTX Full Synthetic 0W-20 Motor Oil, 5 Quarts
    Castrol
    9.3
    Excellent

    Castrol GTX Full Synthetic 0W-20 Motor Oil, 5 Quarts

  • 7

    Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT
    Valvoline
    9.1
    Excellent

    Valvoline European Vehicle Full Synthetic SAE 5W-40 Motor Oil 5 QT

    25% Off

  • 8

    Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
    Castrol
    9.0
    Excellent

    Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts

    • product dimensions:N/A
    • vehicle service type:N/A
    • item weight: 9.15 pounds
    • special features:N/A
    • item model number: 15E6DE

  • 9

    Pennzoil Platinum Full Synthetic 5W-20 Motor Oil, 5-Quart
    Pennzoil
    8.8
    Very Good

    Pennzoil Platinum Full Synthetic 5W-20 Motor Oil, 5-Quart

    • product dimensions: 15 x 9 x 14 inches
    • vehicle service type: Car
    • item weight: 1.76 ounces
    • special features:N/A
    • item model number: 550046122

  • 10

    Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts
    Castrol
    8.7
    Very Good

    Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts

    • product dimensions:N/A
    • vehicle service type:N/A
    • item weight: 9.28 pounds
    • special features:N/A
    • item model number: 15E72E

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