Ampol (ASX:ALD) reported a first-quarter refining production increase of 10% from the same period a year ago to about 1.4 billion liters, according to a Thursday filing with the Australian bourse.

The company said the refiner margin at its Lytton refinery in Brisbane was $25.45 per barrel in the first quarter, up from $6.07 a year earlier, and has increased further in the year-to-date with the Middle East conflict driving higher fuel prices globally.

The "exceptionally strong" financial performance continued in April at both the Lytton refinery and in the trading and shipping segment, the company said.