On Tue, 7 Feb 2017 14:49:11 -0500, "Mr. Luddite"
wrote:

On 2/7/2017 2:09 PM, wrote:
On Tue, 7 Feb 2017 10:45:39 -0800 (PST), True North
wrote:

Gret sez...
"BTW this may change the old rule about whether it is better to store
your boat with full or empty tanks, For me "storage" is the 2 or 3
weeks I am on vacation so I don't give it a second thought."


Wonder if it makes a difference if the boat's tank is made of metal or plastic?
I used to make sure my tank was full of Stabil treated gas but now maybe 2/3rds full of the treated gas so I can add 20 liters of fresh gas when the long 7 months sleep is finally over.

If it is a steel tank, rust might be an issue but I doubt there is
anything horrible that would happen in an empty aluminum or plastic
tank.
If a little water did condense in the bottom, E10 might be the best
solution. After all "dry gas" is just alcohol.



I've mentioned this before but when E10 came out one boat manufacturer
(Yellowfin) had serious problems with the built-in fiberglass fuel
tanks. It dissolved and liquefied some of the resin which then became
ingested in the boat's motors, particularly fuel injection systems. I
doubt that happens with plastic tanks since there doesn't seem to be an
issue with portable, plastic gas containers.


I found this article that seems pretty informative without too much
hyperbole.
They do seem to be saying storing "empty" may be best but it implies
totally empty (dry) not just what pumps out through the fuel pump. I
am not sure how you do that.