K. Smith wrote:
Again there is only one correct way to test & it's simple, easy &
cheap so why not????

If that's true, then why did you post a bunch of tripe about using water?

... Yes you probably do need a new tank, but what if
it's just a leak in a connection etc .

Anyway tried to answer, wouldn't have had not someone suggested 3
psi of air.

ABYC and ABS standards call for 2 ~ 2.5 psi IIRC. But that's for new
tanks & fuel systems.

Fair Skies
Doug King