Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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Conventional Motor Oils of 2025
Save up to 49% off
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- Value for Money
2
CastrolCastrol GTX Classic 20W-50 Conventional Motor Oil, 5 Quarts
Main highlights-
Key Features
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Ideal Use Cases
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Customer Praise
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4
CastrolCastrol GTX 10W-40 Conventional Motor Oil, 5 Quarts
Main highlights-
Advanced Protection and Longevity
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Ideal for High-Temperature Conditions
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Highly Praised Engine Sludge Protection
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See Today’s Deals & Prices
6
Lucas OilLucas Oil 10679 Hot Rod & Classic Car SAE 10W-30 Motor Oil - 5 Quart
11% OffMain highlights-
High Zinc Additive Protection
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Perfect for Classic Cars
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Praised for Longevity
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7
CastrolCastrol GTX 20W-50 Conventional Motor Oil, 5 Quarts
Main highlights-
Key Features
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Ideal Use Cases
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Customer Reviews
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8
ValvolineValvoline VR1 Racing SAE 20W-50 Motor Oil 5 QT
27% OffMain highlights-
High Performance Formula
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Versatile Use Cases
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Customer Praised Reliability
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Similar products on Amazon
- 13% OffFree Shipping
Castrol GTX 10W-30 Conventional Motor Oil, 5 Quarts
Advanced protection against viscosity and thermal breakdown$20.58
$23.72 (13% Off) Pennzoil Motor Oil 10W-30 Motor Oil, 1 Quart
10W-30 motor oil formulated to keep engines clean and responsive$7.67
- 37% OffFree Shipping
Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT
MaxLife Technology prevents engine breakdown with 40% better wear protection than the industry standard$19.97
$31.99 (37% Off) - 13% OffFree Shipping
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
Phosphorus Replacement Technology helps extend emission system life$20.40
$23.72 (13% Off) Mobil 1 Super 5W-20 Conventional Motor Oil
Seal conditioners rejuvenate aging engine seals to help stop and prevent oil leaks$26.00
$28.04- 13% OffFree Shipping
Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts
Phosphorus Replacement Technology helps extend emission system life$20.58
$23.72 (13% Off) - 25% OffFree Shipping
Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT
Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits$26.97
$35.99 (25% Off) Quaker State Advanced Durability Conventional 5W-30 Motor Oil (5-Quart, Single Pack)
Quaker State Advanced Durability 5W-30 Motor Oil ensures two times more wear protection than the industry standard throughout the life of the oil$58.39
- Free Shipping
Lucas Oil 10631 SAE 30 Racing Engine Break-in Oil - 5 Quart
Quicker more efficient ring seal$36.01
$39.99 - Free Shipping
Chevron Supreme SAE 5W-30 Conventional Motor Oil - 1 Quart, Pack of 6
Engine Cleanliness: Formulated to reduce engine deposits, this motor oil helps keep engines clean and running smoothly by preventing the buildup of sludge and varnish.$39.95