Cheap Gas... Well... cheaper maybe

How do you save .02 cents a liter on every gas purchase? It's pretty simple actually. Go to your nearest Petro Canada gas station and fill out the app for their credit card. Immediately you'll receive a card that you can swipe at the pump that will decrease your gas purchase by 2 cents per liter. I recently tried this when I went to pay in the store and the attendant removed the card from the app, swiped it and gave me 40 cents back when I paid him the $20.00 for the gas. I think your allotted something like 230 liters on the card. Try it... it works.