Adding Stabil When Unsure if Gas Has Been Treated

[MickinMO]

I recently bought a used boat. Consignment deal through a boat dealer. Built in 27 gal tank and the guage is at least saying 3/4 tank of gas, who knows. Motor ran fine at test drive and then a flush I did once I got it home. Based on the condition of the boat, guy had all manuals and receipts, and how he had the boat setup it seems the previous owner thought of everything and then some. However, what if he didn't treat the fuel? Should I run the stuff as is since boat seems to be running fine and treat from here on when adding fuel? The dealer told me to use Stabil 360 Marine regardless of whether I use no ethanol gas or not and use it year round. Thoughts on that? BTW, I plan on only using no ethanol gas.

[Ham]

Man, I think it would be a better plan to have the gasoline removed and start with fresh non ethanol gasoline. 

You got less than $75 bucks of free gas that might end up costing lots of bucks in the long run.

[MOPanfisher]

Agree with Ham, even thugh I know my gas is ethanol free and has a shot of sea foam in it I always remove it and start fresh every spring.  I bought a shaker siphon at Napa thinking it was a waste of money, works GREAT for that particular job, even if I did have to lengthen it some.

[MickinMO]

16 minutes ago, MOPanfisher said:

Agree with Ham, even thugh I know my gas is ethanol free and has a shot of sea foam in it I always remove it and start fresh every spring.  

What do I do with 20 gallons of old gas? I don't live in the sticks where I could put it on a burn pile. 

[Ketchup]

dump it in your wifes car. 

[Ketchup]

I have used the marine Stabil 360 for a few years now. Cant tell if it does anything other than cost me money, but it gives me a piece of mind. 

[fishinwrench]

What motor is it ?

[176champion]

I just put 6 month old gas in my trucks and saved 5 gallons for mower.

[Ham]

7 hours ago, MickinMO said:

What do I do with 20 gallons of old gas? I don't live in the sticks where I could put it on a burn pile. 

I’m not starting a fire with 20 oz of Gas much less 20 gallons. Holy Crap what a FIREBALL 20 gallons would create. 

[MickinMO]

25 minutes ago, Ham said:

I’m not starting a fire with 20 oz of Gas much less 20 gallons. Holy Crap what a FIREBALL 20 gallons would create. 

Well, I would not entertain the idea of using all 20 gallons at the same time. I prefer to stay out of the news. However, that would be quite a sight and nothing some old fireworks couldn't help start from a safe distance