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 2159 reviews
(4.8)|
2,159 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
stars2,159 ratings640 reviews
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Showing 1-3 of 640 reviews

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?ac182ff0-0b0e-11f1-82e3-4fb2424f8b5717018132
Aug 30, 2025
WalmartCustomer
Item details
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?ac182ff0-0b0e-11f1-82e3-4fb2424f8b5717018132
Dec 11, 2016
Walmart customer
5 out of 5 stars review

Verified Purchase

Synthetic Oil

To really judge how oil performs, I think it has to be tested over time. Most folks don't keep their cars long enough to know just how much difference there is between dino oil and synthetic. With that said, I have used synthetic oil long enough to know the benefits. I have maintained a friends vehicle since she got it new in 2001. 300,000 plus miles later, the engine still runs great. I have similar experience with a Poulan Pro riding lawn mower . . . 15 years of service and the engine is still as strong as the day I got it. Time between oil changes is extended vs. regular oil as well. I do use the Mobil 1 filters along with Mobil 1 synthetic oil. What makes it all that much better is that the price between synthetic and regular oil isn't all that much different as it has become more popular.

Helpful?ac182ff0-0b0e-11f1-82e3-4fb2424f8b5717018132