Ron/Tony -

Canadians trying to fill up with their credit card at the pump can usually circumvent the "zip code" issue by using this simple method - when asked for the zip code it is a cross reference to the card's billing address - just enter the three numbers from your postal code in the order in which they appear and enter 00 at the end.

Example - the billing address of the credit card has the postal code L6Y 3K2. The equivalent Zip Code for the cross reference purpose would be 63200. You should be good to go!

This little known secret works at most gas stations that I've been to across the U.S. but not all. I've had difficulty doing this with AMEX in some locations.

Generally though, you'll be quite pleased with this trick that I've shared!