series 2 bluebird, Im after the fuel consumption at idle

I am looking for the fuel consumption at idle for a series 2 bluebird, you would have to fill your tank and run your engine at idle at a gas station for about 2 hours then top up your tank again. Then post the results here. My engine uses approx 10 cc/min at 750 rpm and I need to compair it to a normal engine

I am also intrested if you have a wagon how good it is on fuel around the city and on the hwy.
Mine is appox 7L/100km city and hwy. Just wondering if anybody can get anywhere near what I am getting.