11 of The Best 5W20 Synthetic Motor Oil for 2019

Our qualified staff has reviewed over two dozen of the best 5W20 Synthetic Motor Oil on the market and done individual item evaluations to put together our directory of the top 5W20 Synthetic Motor Oil you can purchase. Our review requirements are composed of ease of use, quality & construction, cost, toughness and features. As much as possible, we get the products for assessment by purchasing the item ourselves, renting the item from shops when provided, getting the item from acquaintances, or receiving the item direct from the supplier.

Take a look at our choices for the best 5W20 Synthetic Motor Oil below.

SaleBestseller No. 1
Castrol 03063 GTX MAGNATEC 5W-20 Full Synthetic Motor Oil, 5 Quart
  • Superior wear protection on critical engine parts
  • Unsurpassed level of protection against viscosity breakdown
  • Unique full synthetic technology to fight against harmful sludge build-up
  • High level of fuel economy based on US industry standards
  • Keeps critical parts up to 4X smoother.* *As tested in the industry Sequence IVA wear test
SaleBestseller No. 2
AmazonBasics Full Synthetic Motor Oil, SN Plus, 5W-20, 5 Quart
  • Full-synthetic motor oil (5W-20, 5 quart); formulated for longer drain intervals
  • Formulated to reduce likelihood of Low Speed Pre-Ignition; reduces friction for improved fuel...
  • 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
SaleBestseller No. 3
Pennzoil Ultra Platinum Full Synthetic 5W-20 Motor Oil (5 Quart, Single Pack)
  • Engineered to provide a high-quality base oil using our revolutionary PurePlus gas-to-liquid...
  • Delivers unsurpassed sludge protection to help keep high performance and luxury car engines as close...
  • Provides oil stability and endurance under extreme conditions (heat, load and speed) for protection...
  • Formulated to deliver faster low temperature oil flow and protection in extreme heat
  • Keeps pistons dramatically cleaner than required by the toughest industry standards
SaleBestseller No. 4
Valvoline Advanced Full Synthetic SAE 5W-20 Motor Oil 5 QT
  • Excellent engine cleanliness through superior sludge and varnish protection
  • Outstanding high-temperature protection under severe driving conditions and superior...
  • Helps maintain fuel efficiency
  • Meets the performance requirements of virtually all naturally aspirated, turbocharged and...
  • For any product use or product technical questions call 1-800-TEAM-VAL
SaleBestseller No. 5
Castrol 03083 EDGE 5W-20 Advanced Full Synthetic Motor Oil, 5 Quart
  • Advanced premium full synthetic motor oil to offer strength under extreme pressure
  • Titanium strong for maximum engine performance
  • Reduces metal-to-metal contact across a range of different driving speeds
  • Protects the engine for the entire drain interval even under extreme pressure
  • Decreases engine deposit formation to help maximize engine response
SaleBestseller No. 6
Pennzoil Platinum Full Synthetic Motor Oil (SN) 5W-20, 5 Quart - Pack of 1
  • Engineered to provide a high-quality base oil using our revolutionary PurePlus gas-to-liquid...
  • Helps protect against the effects of low speed pre-ignition (LSPI) in modern turbocharged engines
  • Provides better fuel economy which helps you drive an extra 550 miles per year vs a dirty engine
  • Offers unsurpassed wear protection by keeping engine parts from coming into contact
  • Delivers outstanding piston cleanliness, keeping pistons up to 50% cleaner than required by the...
Bestseller No. 7
Royal Purple 51520 API-Licensed SAE 5W-20 High Performance Synthetic Motor Oil - 5 qt.
  • Better wear protection
  • Increased fuel efficiency
  • Better protection of the expensive catalytic emission system
  • Improved compatibility with fuels containing ethanol
  • Superior corrosion protection
Bestseller No. 8
Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 5W-20 Motor Oil 5 QT
  • All of the benefits of a full Synthetic motor oil with added technology for engines over 75,000...
  • Seal conditioners rejuvenate aging engine seals to help stop and prevent oil leaks
  • Extra cleaning agents to help reduce deposits, sludge and varnish formation
  • Advanced thermal and oxidative stability to help reduce oil burn-off and maximize power output
  • For any product use or product technical questions call 1-800-TEAM-VAL
SaleBestseller No. 9
Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT
  • 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
SaleBestseller No. 11
Mobil 1 120763 Synthetic Motor Oil 5W-20, 5 Quart
  • The product is Mobil1 5QT 5W20 Sync Oil
  • Easy to use
  • The product is manufactured in China
  • Advanced full synthetic formula; helps prevent deposits and sludge build-up to enable long engine...
  • Excellent overall lubrication and wear protection performance for many driving styles; outstanding...

Frequently Asked Questions About The Best 5W20 Synthetic Motor Oil

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