5W20 Oil Reviews





What’s the best 5W20 Oil? Let’s find out.

5W20 Oil is a multi-grade oil. Multigrade motor oil flows well in cold temperatures and still protects the engine at hotter temps. Oils have high viscosity when cold and a lower viscosity once the engine has reached its operating temperature. This difference is too large for most single-grade oil. In order to bring the difference in viscosities closer together polymer additives are added to the oil. The result is a multi-grade oil.

The first number in your oil (5) is the viscosity grade cold. The second number (20) is what you will have when hot (212 degrees F). A 5W20 Oil must pass the SAE-J300 viscosity grade requirement for both 5W and 20. The W stands for Winter, meaning your oil is good for year round driving.

If you are in the market for a great 5W20 Oil then the list below will help you find the best. We have taken the complete list of all oils tested and pulled just the best 5W20 Oil results for your easy comparison.

Best 5W20 Oil

Incredible Protection

#1
5W20 Quaker State Ultimate Durability, API SN, GM Dexos 1 Approved, Synthetic – 121,396 PSI
Zinc: N/A Phos: N/A Moly: N/A
Tested Fall 2015

#2
5W20 Valvoline MaxLife High Mileage, API SN, Dexos 1 Approved, Synthetic Blend – 114,125 PSI
Zinc: N/A Phos: N/A Moly: N/A
Tested Spring 2016

Outstanding Protection

#3
5W20 Castrol Edge with Titanium, API SN – 99,983 PSI
Zinc: 1042 ppm Phos: 857 ppm Moly: 49 ppm
No Longer Available

#4
5W20 Castrol GTX,API SN, Conventional – 95,543 PSI
Zinc: N/A Phos: N/A Moly: N/A

#5
5W20 Mobil 1, API SN – 94,663 PSI
Zinc: 764 ppm Phos: 698 ppm Moly: 76 ppm
No longer available. Replaced by 5W20 Mobil 1 that includes GM Dexos 1 approval. See #75 below.

#6
5W20 Valvoline SynPower, API SN – 94,460 PSI
Zinc: 1045 ppm Phos: 742 ppm Moly: 0 ppm
No longer available. Replaced by 5W20 Valvoline SynPower that includes GM Dexos 1 approval. See #10 below.

#7
5W20 Royal Purple, API SN – 90,434 PSI
Zinc: 964 ppm Phos: 892 ppm Moly: 0 ppm

#8
5W20 Valvoline Premium Conventional, API SN – 90,144 PSI
Zinc: N/A Phos: N/A Moly: N/A

Good Protection

#9
5W20 Pennzoil Ultra, API SM – 86,034 PSI
Zinc: N/A Phos: N/A Moly: N/A

#10
5W20 Mobil 1, API SN, GM Dexos 1 Approved, Synthetic – 85,893 PSI
Zinc: N/A Phos: N/A Moly: N/A
Tested Fall 2015

Modest Protection

#11
5W20 Valvoline SynPower, API SN, GM Dexos 1 Approved – 72,581 PSI
Zinc: N/A Phos: N/A Moly: N/A
Tested Fall 2015.

#12
5W20 Castrol Edge Extended Performance, API SN, GM Dexos 1 Approved, Synthetic – 70,417 PSI
Zinc: N/A Phos: N/A Moly: N/A
Tested Fall 2015.




Interested in seeing the complete list of best motor oils? Or perhaps you would like to see the list broken down by:

Best Motor Oil – Top 10
Best 5W30 Oil
Best 10W30 Oil
Best Synthetic Oil
Best Conventional Oil
Best Racing Oil