The 2012 Coates Hire Ipswich 300 was a motor race for the Australian sedan-based V8 Supercars.
Fabian Coulthard, Will Davison and Russell Ingall shared fourth to sixth in different orders.
Shane van Gisbergen was seventh in both races while Michael Caruso and Tim Slade shared eight and ninth.
With Lowndes winning and Winterbottom finishing ahead of Whincup the top four positions in the championship chase tightened will pulling further away from the rest of the field.
Canadian Formula One world champion Jacques Villeneuve again performed a fill-in role, substituting for Greg Murphy for the second time while Murphy recovered from back surgery.