Don't believe everything you read!

The fuel tank has been a tad confusing. Whenever I filled it up last year, it never would accept as much as I thought. Engraved on the tank is 30 GAL'S (see photo), so when it was showing half full, I would expect to put in 15 gals to fill her up, but she would be full before that.

Or from third full, I would add 10 gals, and the gauge would show much fuller than I expected. I figured the gauge must not be calibrated right.

But it seems the tank is NOT 30 gals as advertised, but only 20 gals. I worked this out using the cylinder volume formula (π r² h), as the tank is 14 in diameter and 30 in height. I checked some of the documentation from the brochures, and a 20 gal tank seems to have been standard.

Still having a hard time ignoring what is engraved on the tank - but the evidence is very convincing....