Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart
Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart
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Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart

4.8 stars out of 2145 reviews
(4.8)|
2,145 ratings
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Key item features

  • Extended Engine: Advanced full synthetic motor oil 5W-20 helps extend engine life for vehicles of all ages.
  • Critical Protection: Designed to protect critical engine parts for up to 10,000 miles between oil changes.
  • Reduced Friction: Uniform synthetic oil molecules reduce friction, helping to prevent deposits and sludge buildup.
  • Cooler Operation: Proven to cool engine temperatures by over 10% compared to conventional oil.
  • Oxidation Control: Helps control oxidation to prevent oil breakdown, maintaining oil integrity.
  • Broad Recommendation: Recommended for all types of modern vehicles, including high-performance turbo-charged and supercharged gasoline and diesel multi-valve fuel-injected engines.
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Current price is $27.9717.5 ¢/fl oz
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4.8 out of 5 stars
stars2,145 ratings640 reviews
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Reviews summary

Pros
  • : Offered at a lower price point than other retailers.
  • : Made from high-end materials for smooth engine performance.
  • : Provides long-lasting performance in vehicles with high mileage.
  • : Provides superb lubrication and prolongs engine life.
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Showing 1-3 of 640 reviews

Aug 30, 2025
WalmartCustomer
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

As the record would confirm, I purchased 2 - 5 quarts of oil As the price was right. Therefore I purchased an extra for the next oil change and received free shipping which is always an added incentive. The product itself has inherent quality.

Incentivized Review
Helpful?c2379010-d40d-11f0-b4b6-85abfc26e41717018132
Feb 8, 2026
tiffany
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Never let me down

My retired mechanic husband swears by Mobil1 for all of our vehicles. Never had any issues with it, seems to do what it needs to do because we have never had vehicle issues related to the oil. We change our oil every 3-5000 miles, and use the specified filter. The bottle pours easy and has a sight glass to see how much you have poured.

Helpful?c2379010-d40d-11f0-b4b6-85abfc26e41717018132
May 29, 2021
Kenjamin
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Conventional vs Synthetic? The choice is simple!

Over time traditional oils degrade O rings and other rubberized or plastic components that they come in contact with. Not to mention the caustic cancer causing risks associated with these standard oils when they come in contact with you skin. And after personally experiencing some valve cover gasket and engine seals starting to seep and slowly drip oil it was suggested I switch over to a full synthetic or blend to combat this issue. I think that was the smartest thing I could've done to remedy some of the problems related to conventional oil! I now own a pickup truck and I will only use synthetic oil in it as well as any other vehicle I own throughout my life. The extra cost of synthetic far outweighs the "cost" of conventional oils. When you look at long term effects and damage caused by regular crude oil vs the synthetics with their longer time between oil changes and their durability, the choice should be a no-brainer.

Helpful?c2379010-d40d-11f0-b4b6-85abfc26e41717018132