siphon off gas

Translations
перекачивать бензин
Thieves managed to siphon off gas from several vehicles in the parking lot.
Воры смогли перекачать бензин из нескольких автомобилей на стоянке.
Definitions
To illegally or secretly remove gas (such as gasoline or fuel) from a tank, container, or system, often by using a tube to draw the liquid out.