Fuel Saving Tips

Don't fill up in supermarkets

firstly you can smell the difference in fuel quality (especially if you have a fuel leak ;) ) and secondly working out the MPG from a supermarket unless you drive a small engine car. you gain less MPG... and then when you compare this to the money you spent.. it still works out less... so why fill up in a supermarket... their fuel had additives that lowers the MPG... whats it doing to your engine?