I bought this:
https://www.amazon.com/gp/product/B00QSPU0NS/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
I have a lot of gasoline fueled stuff: 4 tractors (2 lawn, 2 garden) several chain saws, tillers, weed wackers, augers, chipper/shredders, generators, etc.
It was well worth the money.
I pull the gas out of everything unless I use it within a week.
Excellent info—thank you! I’ll buy it for a Christmas gift...hehe...