Went to Walmart at lunch time and picked up the small Supertech tc-w3 outboard bottle, maybe 20 oz or so, didn't look. They also have the gallon size. $2.06 for the oil. Didn't see any measuring things that looked easy but I walked by the travel section near the deodorant/ toothpaste aisle and there was a travel size Listerine 3.2 oz plastic bottle (with a tight fitting cap) for $.97. Dumped the mouthwash (maybe I should have rinsed) wiped the inside best I could and filled with the oil for a perfect 1 oz to 5 gal. mix. The bottle is a nice fit for the filler tube and the cap keeps the car from smelling like a refinery. Filled the tank and I'll see if I notice anything. Worse case, I have some really good oil for the trimmer and snowblower.