"We would like to make amends to these customers by running a 12-hour discount day at their local sites today."
Regular 91 will be as low as $1.479 at two stations, ranging to $1.569 in others. Force 10 drops to between $1.629 and $1.719, and diesel is down to $0.799 at all five sites.
Motorists can save more by using Countdown supermarket discount vouchers.
Last week's discounted petrol sparked a price war, and numerous other petrol stations dropping their prices to match Gull's.
Z dropped prices nationwide by 3c on all petrol grades, and at least one Z station in Auckland, at Green Bay, was offering 91 octane at around $1.56.
The Gull stations offering the 12-hour discount are:
• Waipapa, State Highway 10, Northland.
• Forest Hill Rd, 260 Forest Hill Rd, North Shore, Auckland.
• Norton Rd, 103 Norton Rd, Hamilton.
• Melville, 82 Ohaupo Rd, Hamilton.
• Gisborne, 53 Awapuni Rd.
Prices at the five sites will be:
91Force 10Diesel
• Waipapa: $1.569 $1.719 $0.799
• Forest Hill: $1.499 $1.649 $0.799
• Norton Road: $1.479 $1.629 $0.799
• Melville: $1.479 $1.629 $0.799
• Gisborne: $1.569 N/A $0.799
(Source: Gull New Zealand)