10 Best Conventional Motor Oils

After analyzing 835 products, scanning 3125 reviews, spending more than 36 hours of research and speaking with our test users, we think the AmazonBasics Conventional Motor Oil is the one of the Best Conventional Motor Oil on the market.

AmazonBasics Conventional Motor Oil – Best Overall Conventional Motor Oil

AmazonBasics Conventional Motor Oil
  • Conventional motor oil (5W-30, 5 quart); Formulated to reduce likelihood of Low Speed Pre-Ignition
  • Helps reduce friction for improved fuel economy and protection against engine wear
  • High resistance to viscosity and thermal breakdown
  • Helps to fight volatility burn-off to minimize engine deposits and exhaust emissions
  • API SN Plus and ILSAC GF-5 approved; always follow vehicle manual recommendations

Valvoline Daily Protection SAE 10W-30 Conventional Motor Oil 5 QT – Best Budget Conventional Motor Oil

Valvoline  Daily Protection SAE 10W-30 Conventional Motor Oil 5 QT
  • Formerly Valvoline Premium Conventional Motor Oil; same great product, now in new packaging
  • Protects against all types of deposits at all temperatures to keep engines clean
  • Contains durable anti-wear additives that stay in the oil longer to improve protection and provides enhanced oxidation control to resist oil thickening
  • Provides thorough anti-wear protection exceeding current U.S., Japanese and European wear tests for gasoline and gasoline turbo-charged engines
  • For any product use or product technical questions call 1-800-TEAM-VAL

Castrol 03102 GTX High Mileage 5W-30 Synthetic Blend Motor Oil

Castrol 03102 GTX High Mileage 5W-30 Synthetic Blend Motor Oil
  • For cars with over 75,000 miles
  • Helps prevent catalytic converter and emission system failure
  • Superior dispersancy that fights sludge build-up
  • Exceptional oil burn-off protection exceeding industry standards** ** Based on API and ACEA volatility specifications
  • Seal conditioners to help reduce leaks
  • Advanced additives to minimize engine wear
  • Improved fuel economy
  • API SN; ILSAC GF-6
  • Castrol recommends the use of Bosch oil filters

Castrol 03095 GTX 20W-50 Motor Oil

Castrol 03095 GTX 20W-50 Motor Oil
  • Superior protection against engine sludge* *As measured in the Sequence VG Sludge test
  • Advanced protection against viscosity and thermal breakdown
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • API SN/SM/SL/SJ
  • Castrol recommends the use of Bosch oil filters

Pennzoil 550045208 5 quart 5W-30 Motor Oil (SN/GF-5 Jug)

Pennzoil 550045208 5 quart 5W-30 Motor Oil (SN/GF-5 Jug)
  • Cleans out up to 40% of engine sludge in the 1st oil change. Continues to clean in the 2nd oil change
  • Helps prevent sludge and other damaging deposits
  • Helps clean up engines by gently lifting sludge deposits off engine surfaces and dissolving them safely into the oil
  • Controls high-temperature oxidation and deposits
  • Enhanced emission system protection compared to GF-4 and earlier service categories

Pennzoil Conventional 10W-30 Motor Oil (5-Quart

Pennzoil Conventional 10W-30 Motor Oil (5-Quart
  • Contains an active cleansing technology to help clean out sludge lesser motor oils leave behind
  • No leading conventional oil provides better wear protection by preventing metal-on-metal contact
  • Helps protect against the effects of low-speed pre-ignition (LSPI) in modern turbocharged engines
  • Contains a proprietary formulation that is designed to reduce friction between moving engine parts

Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend

Valvoline  High Mileage with MaxLife  Technology SAE 5W-30 Synthetic Blend
  • Seal conditioners rejuvenate aging engine seals to help stop and prevent oil leaks
  • Extra wear protection helps prevent future engine wear
  • Extra detergents keep older engines cleaner by bonding with and removing sludge and deposits
  • Anti-oxidants help prevent oil breakdown preventing engine-clogging sludge and deposit formation
  • For any product use or product technical questions call 1-800-TEAM-VAL

Quaker State Advanced Durability Conventional 5W-30 Motor Oil (5-Quart

Quaker State Advanced Durability Conventional 5W-30 Motor Oil (5-Quart
  • Protects against corrosion and contains acid neutralizing additives to stop combustion acids from corroding your engine
  • Meets or exceeds North American warranty requirements for worldwide car manufacturers including European, Japanese and US
  • Provides stay in grade viscosity throughout the oil drain period
  • Advanced Durability Motor Oil is formulated to meet the fuel economy requirements of the GF-5 Industry standard

Castrol 03094 GTX 10W-40 Motor Oil – Premium Pick

Castrol 03094 GTX 10W-40 Motor Oil
  • Superior protection against engine sludge* *As measured in the Sequence VG Sludge test
  • Advanced protection against viscosity and thermal breakdown
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • API SN/SM/SL/SJ
  • Castrol recommends the use of Bosch oil filters

Pennzoil High Mileage Conventional 5W-20 Motor Oil for Vehicles Over

Pennzoil High Mileage Conventional 5W-20 Motor Oil for Vehicles Over
  • Engineered for older vehicles that have accumulated over 75,000 miles
  • Contains seal conditioning agents for dry or cracked engine seals to help reduce leaks and oil consumption
  • Helps protect against the effects of low speed pre-ignition (LSPI) in modern turbocharged engines
  • Provides unsurpassed wear protection to help keep your engine running efficiently (based on industry standard Seq IVA engine test)
  • No other leading motor oil helps keep engines cleaner (based on industry standard Seq VG engine test)

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