Good news for those of us who shop for food and gas in the Northeast and Canada.

Shaw’s Market and Irving Oil are teaming up to save you money. In a recurring promotion for both retailers, Shaw’s Market will give you a coupon worth ten cents off every gallon of gas that you purchase at a participating Irving BlueCanoe, or Mainway Stations. The more groceries that you may need, the more you could potentially save.

Here’s how it works: for every $50.00 you spend on groceries, Shaw’s will give you a coupon worth ten cents off every gallon of gas at participating stations. If you spend $100.00, you’ll get twenty cents off, and $200.00 gets you forty cents off., and so on.

You’ll need a Shaw’s reward card, which is free and entitles you to weekly discounts on food. You will also need the card at the time that you redeem your gas coupon.

The discount applies to every gallon of gas you put into your car. And best of all, you can combine coupons, up to the cost of a gallon of gas. So, if you manage to collect $4.00 in coupons, your gas is essentially free. That is, of course, at least until the price of gas hits $5.00.

Currently they have a double rewards promotion whereby you get double the discount. So rather than ten cents, you get twenty for very $50.00 spent.

The promotion is going until May 22nd, and the coupons can be redeemed anytime between now and June 5th, 2008.

For more information about the promotion, as well as locations of participating stores and gas stations, check out the Shaw’s Rewards website.

Bear in mind, even though time is running out on the deal, Shaw’s and Irving have held this promotion several times in the past year and it stands to reason that they will do it again before too long.

And saving ten to forty cents (or even more!) a gallon is pretty significant, especially when you consider what gas prices are today.