Yes, but your cash back per gallon may be reduced to account for the cost of the other promotion. This is to ensure that Upside works for everyone, including the business you're supporting. You will always receive at least a penny per gallon from us though.
Note: If a purchase has already been processed by an affiliate cash back program (like Checkout 51 or GasBuddy), you will not earn cash back. Learn more about when cash back is denied or reduced.