Hello. According to the current ReliaCard Frequently Asked Questions, gas stations may block your card for more than your purchase when you pay outside of a gas station. You can read more about it here
https://reliacard.pissedconsumer.com/cu ... rvice.html .For example, your ReliaCard may be pre-authorized for $ 74 withholding if you drag it through a gas station, even if you only bought $ 10 worth of gas.