I have had good luck using a small (13 ounce by weight?) coffee can for the tip over method. the typical 20 fluid ounces of oil fills the can about 2/3s and the can just fits under a 21 inch mower laying on it's side. Still spill a few drops now and then but I've done it this way for years. Ironically, must of the metal cans are only available with "house" branded coffees, the major brands have all gone to bages or plastic. Incidently, the largest (39 ounce?) metal can neatly holds 25 pounds of lead shot for the reloaders out there. Oops, my coffee cup's empty - going for a refill. :wink: