Here are the instructions of Walmart.com on how the fuel works in Exxon.
Key points: It must be an Exxon or Mobil Station participating, you must have the application installed on your phone, you must have enabled location services, you must pay in the pump with the same card you use in your Walmart+account. And yes, you can use the discount several times during the week for the discount. Do you forget how to do it? Go to the application and find the gas discount on the displacement menu of the advantages of Walmart Week. Click get more information to get step by step instructions. Here is the simplified version;
Exxon and Mobil fuel stations
Of the Walmart application:
Select services at the bottom of the screen.
Select the prices of members in fuel.
Scan the QR code into the pump.
Select fuel for less in the emerging window.
Enter your fuel pump number.
Select a payment method.
Select the qualification and start feeding.
You will get a printed receipt when you finish.
You will not get a digital receipt, but you will see savings in your shopping history.