Quote: If the mechanical pump diaphragm ruptures, it will STILL pump gas into the pan, whether you have an electric pump or not!!! You are just as likely "not" to notice the problem, either way.
I don't know what train of though that this comes from but --- -- If the diaphram ruptures in a mechanical plum there is no fuel going to be pumped to get into the oil pan,. The only way fuel will get int tthe pan is if the the vehicle gets parked in such a way as to have the tank at a level that is higher than the fuel pump location and the fuel can syphon out. This is entirely possible and I have seen it happen many times just taking the lines off to put on a new pump but to pump the fuel forward with a broken diaphram is obsurd. Pumping the fuel into the pan with an electric pusher is entirely possible and plausible.
