Canadian Marriott Visa at US Gas Pumps?

Canadians often encounter a problem when gas pumps in the US require a zip code before they will process a credit card transaction. I am wondering whether any Canadians have been successful in using their Marriott Visa card at US gas pumps. I have heard of tricks that sometimes work with certain MasterCards (use the 3 numerals in your postal code plus two zeros in place of zip code). Any info on using the Canadian version of the Marriott card would be appreciated.

Thanks