I’ve tweeted before about getting discounts from Shell gas stations, where they’ve made a deal with The Kroger Company. If you shop at one of their stores – in my case, it’s Ralph’s supermarket – with your rewards card, you get 1 point for every dollar spent, which you can then redeem at any Shell station. It’s currently 100 points for 20 cents off per gallon at any Shell station.
Since I live alone (also expect a post eventually about frugal living by yourself!), my grocery buying underpaces my gasoline consumption. I usually fill up my tank every 7-10 days, and you can bet that I don’t buy $100 worth of groceries in that same amount of time!