Red Horn, I've never drained through the drain hole, as i think most people wouldn't either! Let's face it who in their right mind would go from one side of a scoot to the other, to drain, then get more out and clean the gauze filter!
As for going to CostCo for a wide mouthed whatever!!!! Being an Alcy who loves scooting...not at the same time!!!!...manual stipulates 70cl- .7L to refill, what better than a 700ml bottle of Vodka! Of course, make sure there's no trace of vodka in the bottle! ( I rinsed mine out with old engine oil) I couldn't find anything like for the gearbox.... so spent good money on a 100ml syringe, because you can overfill!!!!
Happy scooting
Keith