In this case we would recommend you to get a regular credit card with gas rewards. Such card will reward you for gas purchases you make everywhere, including all gas station you use. All other purchases will also earn rewards. Regular cards do not have gas spending limits you should meet to earn rewards. However, they may have caps on rewards you can earn in particular category within a set period of time.
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All rates and fees, and other terms and conditions of the products mentioned in this article/post are actual as of the last update date but are subject to change. See the current products' Terms & Conditions on the issuing banks' websites.