Gday,i normally get 700ks+ out of a tankfull[best iv had is 780],towed the boat to Bermagui last week & dropped to 500ks a tank.I knew it would use more,just asking what other people are getting?Nav towed it great,100ks an hour & only had to drop it back to 4th on some of the hills.Boat is 4.8 plate Formosa cc,50 yammy on back approx. weight 900kilos & its a big wide bastard,2.2m on 6m Dunbier.All feedback welcome.Hugh