I think I remember reading that real problem problem isnt the octane per say, its the degradation of the volitals or something like that......

you should definitely pump all the fuel out of your tanks. I will bring my center console over to help you get rid of 60 gallons :party-smiley-048:

What is the easiest way to empty your tank? How do you pump it out? Gravity? Manual hand pump? Takes forever i guess???

How long of a time frame are you talking about here? I live up in northern NY so my boat sits anywhere from 5-6 months. I use 91 octane at the pump non-ethanol. Near the end of the season I run my tank very low and add fuel stabilizer. Full tank for me is 140 gallons so I'm guessing there is 40-80 gallons in the tank depending on the year. Then in the spring I fill it with fresh 91 hoping to overcome what was sitting all winter. After running it 2-3 times I then change fuel water separator and fuel filter. I have never seen any water in my separator filter, so this seems to work well for me, but my boat is also garage stored. Maybe if it is something that is covered and stored outside it is better to winterize with full tanks.

I went on Amazon, bought a small electric fuel pump, long length of hose. I unplugged the line to my fuel tank from my boat's fuel pump, plugged in the hose to the new pump and put the new hose length in my F-150's fuel tank. Let her rip. Then start making a line of everything you own, car, truck, lawn mower, etc.

Bonus points for the bigger fuel pump you buy, the one I bought took forever.

Yup, me too.

Got an electric pump that accepted barb fittings. Put a good 8ft or more hose on both ends. Also, put 10+ft of electric wires with alligator clips on it. Unhook rubber fuel line from boat, put on rubber line from pump...wallah, right into the truck and/or fuel jugs. I use this for my snowmobiles, snow blower, lawn mower, etc,etc. I also use it to bench set carburetor floats when I rebuild carbs for people. :)

I used the Torco product for 2 seasons on my 454 mags with wieand 177s. I had a cam break the next year so I puller both of them out to rebuild. the inside of the engines looked everything could've been reused, except the cam and the pieces that it hit.;)

What about the Jabsco pump many of us have mounted to the the lid of a 5 gallon bucket for oil changes? Would it be a fire Hazzard? Seems like it would be, but it would be fairly quick if its safe.

Sorry for the hijack.

Well the motors make about 590hp with 177 blowers and 8:1 compr. The fuel is not old but when I got the boat the guy said he just used regular pump gas from the local gas station. He couldn't tell me if it was 87 or 89 octane. I will find out what octane they will need when I dyno the 1 motor that had to be rebuilt due to a fuel regulator issue. I can pump the fuel out with a electric fuel pump I have but its just the storing and then using all that fuel. I was hoping the octane boosters would bump 87 up to 93 plus without any other issues so it would simple and easy but like everything else with a boat I guess I will have to take the harder route.

harbor freight has some pumps that work to get fuel out . Used em when I had to replace the tanks .