This is a lot more attractive than the 20c/L offer in the current catalogue (spend $100+ on selected gift cards) as you don't have to purchase gift cards at RRP. Woolies often has them discounted for 20% off, so you're going to be better off with a slightly lower fuel discount and waiting for those gift cards to be on sale again.
As always check ACCC graphs, MotorMouth etc. to find the best time to fill up in your area. If you're in Melbourne it's a great time to fill up as prices are currently cheaper than they've been for quite a few months.
Standard spiel: ^To save 15c per litre on fuel at CALTEX WOOLWORTHS co-branded outlets, simply spend $100 or more in a single transaction (no transaction splitting is permitted at point of sale) at Woolworths Supermarkets from Friday 16th November 2012 until Sunday 18th November 2012 and surrender your fuel saving docket or present your Everyday Rewards card (not applicable in Tasmania) at any CALTEX WOOLWORTHS co-branded fuel outlet. Offer not available at Woolworths Liquor / BWS or CALTEX WOOLWORTHS outlets. Fuel discount valid for 28 days after purchase. Discounts not available on purchases of LPG at designated CALTEX WOOLWORTHS co-branded outlets or on any Caltex Starcard purchases. Woolworths Limited reserves the right to at any time suspend or terminate this offer. Regular fuel discount docket conditions apply. Purchases of Gift Cards (including iTunes cards) do not contribute to the qualifying amount. “Smoking/Tobacco product” purchases in New South Wales, Queensland, South Australia, Tasmania and Australian Capital Territory are excluded from qualifying amount by law.
just a q but when has woolworths ever had 20% off gift cards?