every credit card bowser i have used has asked for a pre approved amount first, this is whats held by the bank, not $1000.. as soon as the pump hit the pre approved amount, it stops. though i have only used bowsers at wollonong, bathurst, dubbo, narromine, temora, walgett, brewarrina, bourke, moruya, ballina, nerranderra. all asked for a pre approval amount. hence, go back to my planning comment earlier.