Want to Save Gas? Try Mobil 1 Advanced Fuel Economy, on Sale Now at Walmart

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The price for a barrel of oil hasn't gone up much since March, but gas prices seem to go up every day. What gives? Theories abound. Regardless of whom or what you choose to blame, drivers are willing to try anything to save money on gas these days. While we can't guarantee that Mobil 1 Advanced Fuel Economy motor oil will save you money on gas, folks who use it regularly swear by it.

Right now Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil is on sale at Walmart. All weights are in on this deal, so no matter what you drive—most newer cars use synthetic motor oil anyway—pick up some low-viscosity Mobil 1 Advanced today and see whether it works for you. Hey, every little bit helps these days.

Walmart's rollback prices are for five-quart bottles of Mobil 1, whether purchased solo ($24.47, down from $27.47) or in a case of three ($73.38, from $82.38). We looked at several online retailers, including nationwide auto-parts chains, and this was absolutely the lowest price we could find on the stuff.

With hundreds of user reviews at Walmart, Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil gets a sterling rating of 4.8 stars—nearly perfect. While we always take "user reviews" with a healthy grain of salty skepticism, these sparkling reviews aren't just limited to the Walmart pages. Check other retailers or even the Mobil 1 website: Users swear by the stuff.

Designed to deliver for up to 10,000 miles between oil changes, Mobil 1 Advanced Fuel Economy motor oil is formulated with a proprietary blend of high-performance synthetic base stocks fortified with balanced additives. It's recommended for use in all types of modern gasoline-powered vehicles, even those with high-performance, turbocharged, supercharged, multivalve, or fuel-injected engines.

This low-viscosity, advanced full-synthetic formulation can help increase engine efficiency and improve fuel economy more than higher-viscosity oils. How can Mobil 1 Advanced Fuel Economy motor oil save you gas?

Low-viscosity motor oils flow faster than 5W‐20 and 5W‐30 motor oils, reaching your engine's vital parts faster during start-up. Not only does this help reduce wear, but it also reduces demands on your starter and battery.

Mobil 1 claims a "potential 0.2‐2.3 percent fuel economy improvement can be obtained by switching from higher viscosity oils to a 0W-20 or 0W-30 grade." (We haven't tested those numbers ourselves, but ExxonMobil has, and it's all spelled out on the Mobil website here.)

Mobil 1 says its Advanced Fuel Economy synthetic motor oils "deliver up to 2 percent fuel economy improvement* and can save drivers more than $400 on gasoline over the life of their vehicles. That's a savings of about six cents per gallon of fuel. A typical passenger car with a 20-gallon gas tank can go up to nine more miles on a tank of gas when using Mobil 1 Advanced Fuel Economy in either 0W-20 or 0W-30. That equates to up to 250 more miles per year under typical conditions."

Mobil 1 Advanced Fuel Economy is available in 0W-16, 0W-20, and 0W-30 weights. 0W-16 is made specifically for use in select engines requiring a 0W-16 viscosity oil. However, 0W‐20 can be used in all vehicles currently running 0W-20 and 5W-20 oil, and Mobil 1 0W-30 Advanced Fuel Economy can be used in vehicles that normally run 0W-30, 5W-30, and 10W-30 motor oil.

From Mobil.com: "*Fuel economy improvement is based on a comparison versus those viscosity grades most commonly used and a potential 2 percent fuel economy improvement. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions, and your current engine oil viscosity. Savings estimates are based on a gasoline cost of $3 per gallon, average fuel economy of 22.5 miles per gallon, annual mileage of 12,500 and lifetime mileage of 150,000."