not sure guage works right, just bought boat few days ago showed half tank, and bobbled alot on water, so good measure filled up at marina, held 15 gallons, and showed half to 3/4 tank, when filled it up it pegged to full, been out twice all day back down to half again, tank is in floor so i dunno if accurate or not, any suggestions would be great, like how many gallon tank is on these? has the 125/270 setup volvo i/o
