I have some petrol in a tank all the way in my garage & I would like to pump it out using a average pump from bought from harware store which is designed to get water originally. The reason I want to know is will it damage the pump or will I succeed? Will the pump actually work on gas or only designed for water? And will it have greater sucktion impact if I use a thinner pipe for the intake or just leave as the original diameter which came with the pump??? Any help appreciated?