10 Best Synthetic Oils 2021

# 1
Castrol 03057 GTX MAGNATEC 5W-30 Full Synthetic Motor Oil, Green, 5 Quart
  • Dramatically reduce engine wear
  • Leave critical engine parts 4X smoother* * As tested in the industry Sequence IVA wear test
  • Superior wear protection on critical engine parts
  • Meets Specifications: API SN Plus, ILSAC GF-5, GM dexos1 Gen 2, Ford WSS-M2C929-A, WSS-M2C946-B1
Sale# 2
Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT
  • Innovative anti-wear additives provide 50% more wear protection than industry standards as tested in the industry Sequence IVA wear test
  • Full synthetic formula for exceptional high and low temperature protection
  • Extra detergents help fight sludge and deposits
  • Superior antioxidants resist motor oil breakdown in extreme conditions
# 3
Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart
  • Mobil 1 advanced full synthetic motor oil 5W-20 helps to protect your engine from the five factors that can damage engines over time
  • Helps to protect critical engine parts for up to 10,000 miles between oil changes*, controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
# 4
Pennzoil Platinum High Mileage Full Synthetic 5W-30 Motor Oil for Vehicles Over 75K Miles (5-Quart, Single-Pack)
  • Full synthetic 5W-30 engine oil made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology
  • Designed for for vehicles with over 75,000 miles
  • Pennzoil Platinum High Mileage 5W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results)
  • No other leading high mileage motor oil provides better protection from friction (Based on Sequence IVA wear test using SAE 5W-30)
# 5
Castrol 03128C Edge High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart
  • Titanium strong for maximum engine performance in vehicles with over 75,000 miles
  • Maximizes short and long term engine performance on high mileage engines
  • Boosted with extra fluid titanium technology to increase oil film strength and reduce film breakdown
  • Reduces leaks, oil burn off and power-robbing deposits
# 6
Castrol 03060 GTX MAGNATEC 0W-20 Full Synthetic Motor Oil, Green, 5 Quart
  • -Dramatically reduce engine wear
  • -Leave critical engine parts 4X smoother* * As tested in the industry Sequence IVA wear test
  • -Superior wear protection on critical engine parts
  • -Unsurpassed level of protection against viscosity breakdown
# 7
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Gallon, Case of 3)
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Provides 1. 5% improved fuel economy performance compared to SAE 15W-40 oils
  • Triple Protection Plus formula combines fully synthetic base oils with advanced additives for excellent equipment protection and long engine life
  • Formulated with additive technology that protects against the effects of soot, dirt and other contaminants
# 8
Castrol 03129C Edge High Mileage 10W-30 Advanced Full Synthetic Motor Oil, Black, 5 Quart
  • Titanium strong for maximum engine performance in vehicles with over 75,000 miles
  • Maximizes short and long term engine performance on high mileage engines
  • Boosted with extra fluid titanium technology to increase oil film strength and reduce film breakdown
  • Reduces leaks, oil burn off and power-robbing deposits
# 9
Amazon Basics Full Synthetic Motor Oil, SN Plus, 0W-20, 5 Quart
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Formulated for longer drain intervals
  • Helps prevent build up that can cause rust and corrosion
  • Reduces friction for less engine wear
# 10
Pennzoil 550046127 Platinum Full Synthetic Motor Oil (SAE, SN) 0W-20, 5 Quart - Pack of 1
  • Full synthetic 0W-20 engine oil made from made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology
  • Pennzoil 0W-20 is a carbon neutral motor oil, achieved through verified Nature Based Carbon Credits that offset the CO2 lifecycle emissions
  • Provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine)
  • Pennzoil Platinum 0W-20 keeps pistons up to 45% cleaner than the toughest industry standard (based on Sequence IIIH results)

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