My gas tank says 62 gallons. Last weekend we took the boat to Lake Travis and spent the weekend with our kids and 8 grandkids. Filled it up with ethanol free on the way there Friday (at Buccees in Waller for you SE Texans) Put 8.6 hours on the boat. The last ride before pulling her out of the water was a slow 15-18 mph 1-hr cruise with my wife after the kids left Monday morning. The fuel gauge started that last cruise at 1/4. I headed back to the dock in time for it to indicate 1/8 full. Turned off the engine, brought the trailer down the ramp etc. Started the engine back up and now the fuel gauge reads EMPTY . Got her on the trailer.
Filled back up at Buccees ($3.679/gal). She took 59.75 gallons! Yikes!
2 gallons left! Probably 10-20 minutes left at that cruising speed. (also, American Express called and said they suspected that my card was being used fraudulently at Buccees!)
Chief Mate said no more running below 1/4 tank! Gotta agree with her, but at least I know the gauge fairly accurate.
Consumption was 59.75 / 8.6 = 6.95 gal/hr. Does that sound right for a 5.0L V8 260 hp, mostly running 20 to 30 mph with full load of people and/or pulling skiers and tubers.
Yeah, we had a great time! Lake Travis is incredible - especially if you like to gawk at one $10M house after another, mile after mile after mile!