** Shares of Australia's Ampol ALD.AX fall as much as 3.1% to A$30.10, their biggest intraday pct loss since June 24

** Ampol, Australia's top fuel retailer, posts third-quarter sales volume of 6,028 million litres, a 7.6% dip from PCP

** Co's refinery production for the quarter up 37% at 1,252 million litres from previous year

** Reports an increase in its refining margins at Lytton Refinery to $10.64 per barrel in the third quarter, up from $8.71 in the previous quarter

** Around 1.3 million shares change hands; nearly 1.4x 30-day average

** Ampol stock up 7.5%, YTD

(Reporting by Keshav Singh Chundawat in Bengaluru)

((Keshav.singhchundawat@thomsonreuters.com))