That is not only the most sensible approach, but it is the most cost effective...
As to the taking time to do it...??
Very few folks drive or push their mowers up to the gas pumps at their service station... so they are going with some type container anyway... If you feel the need to add something to the fuel... add it to the empty fuel can before you go, unless you forget to get fuel... you will have no reason to not take the 30 seconds it may take to add... :smile:KennyV