I had a number of the Todd Gas Caddies for the boats and jet skis. Yes, a number. Guess how much fuel teenage daughters can consume in jet skis in a day? Those days are past and teenage granddaughters are already here.
Anyway, they have worked well and are pretty much spill free. We ended up with a second home for the bride's new job and along with that another tractor. We lived apart as a result for a number of years, which meant the bride had to mow grass and blow snow on her own from time to time. While I made it a point to to top of the tractor when I was at that home, there would be instances where I wouldn't be there for a month. While she "may" have been able to handle the 5 gallon container, it wouldn't have been without spilling some of it on her, the tractor, and the ground. She never paid attention to the fuel gauge, she just mowed until she ran out. So that meant she'd be re-fueling in the middle of the lawn. Petroleum products make great vegetation killer---nothing will grow where it has been split for years.
So my remedy was a Todd Diesel Caddy. Not at all cheap, but a quality piece the bride could handle when full (30 gallons) and not a spill a drop. So I cost justified it on the basis of what I would continually spend remedying dead grass patches and the cost of a 6+ hour round trip in the middle of snow storm, when she ran it out of fuel snow blowing.
https://www.homedepot.com/p/Todd-28-Gal-Diesel-Caddy-with-Industrial-Hand-Crank-Pump-932404IP/308395467?cm_mmc=Shopping%7CB%7CBase%7CD26P%7C26-6_IRRIGATION%7CNA%7CPLA%7c71700000034388195%7c58700003952496747%7c92700032054947279&msclkid=f4ecedb0f86516144cd8b0c76613c5bf&gclid=CM_iu_enxuQCFVFtgQodcIwOMg&gclsrc=ds
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I purchased mine from Zoro.com when they had a 30% off promo and free shipping. Net cost was about $450. I see Zoro has REALLY increased the price on these now.