Funnel Hack
Another foil hack you can consider is using it as an emergency funnel. This can come in handy when you don’t have a funnel at hand or the one you have isn’t the right size. It even has an advantage over the regular funnel as it can be bent and adjusted to fit and reach irregular holes like the one on the engine of a lawn tractor.
To form the funnel, you need a heavy-duty aluminum foil as the thin regular ones can tear. Double the length of the foil and roll into a cone shape. Your funnel is ready!