Best Synthetic Engine Oil

Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Single Pack)

Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown.
Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress.
Improves low-temperature flow (compared to conventional 15W-40 oils).
Helps control engine deposits for reliability at extended oil drain intervals (always follow the OEM recommended oil drain interval).
Controls engine wear 37 percent better than the maximum wear requirements in API CK-4 engine wear tests.

Full synthetic 5W-20 engine oil made from made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology.
Provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine).
Pennzoil Platinum 5W-20 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results).
No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30).
Formulated to provide faster low-temperature oil flow and protection in extreme heat.

Full synthetic 5W-20 engine oil made from made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology.
Provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine).
Pennzoil Platinum 5W-20 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results).
No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30).
Formulated to provide faster low-temperature oil flow and protection in extreme heat.

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....
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....
Helps extend engine life by working to prevent damaging deposits and sludge buildup.
Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F).

Mobil 1 Advanced Full-Synthetic Motor Oil 10W-30 Utilizes Mobil 1’S Signature Triple Action Formula To Deliver Outstanding Engine Performance,....
Helps Protect Critical Engine Parts For Up To 10,000 Miles Between Oil Changes,* Controlling Oxidation To Prevent Oil Breakdown And Maintaining....
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....
Helps Extend Engine Life By Working To Prevent Damaging Deposits And Sludge Buildup.

Mobil 1 Extended Performance full-synthetic motor oil 5W-30 helps protect critical engine parts for up to 20,000 miles between oil changes,*....
Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power.
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....
Helps extend engine life by working to prevent damaging deposits and sludge buildup.
Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F).

Full synthetic 10W-30 engine oil made from made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology.
Provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine).
Pennzoil Platinum 10W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results).
No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30).
Formulated to provide faster low-temperature oil flow and protection in extreme heat.

Full synthetic 10W-30 engine oil made from made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology.
Provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine).
Pennzoil Platinum 10W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results).
No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30).
Formulated to provide faster low-temperature oil flow and protection in extreme heat.

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).
No other leading synthetic oil provides better wear protection from friction (Based on Sequence IVA wear test using SAE 5W-30).