Resealable Oil Quart Extension

thingiverse

I have an old airplane where the oil cap isn't really accessible and always ended up spilling oil inside the cowling when I added it. But I'd frequently only add a quarter of a quart or half a quart at a time. So if I used a normal funnel, it'd end up being a mess. In order to completely avoid a mess or waste, I wanted some kind of funnel that could be permanently attached onto the oil quart (securely) and capped off for the next use. I also wanted it to be small enough to fit inside of a gallon bag as a secondary container. Every existing product I tried either had too lose of a fit, or the cap wasn't secure enough to keep the oil in. So I designed my own. Also note I've specifically designed this to fit Aeroshell W100... I'm assuming other oil quarts are the same thread. It fits the top of a 2 liter soda bottle pretty well too (not sure why you'd need it for that, but why not...). But don't mix oil and soda... bad idea.