On Tue, 13 Mar 2018 19:12:54 -0700 (PDT), True North
wrote:

I bought the generator brand spanking new in early January. The counter guy filled the tank and was supposed to have test run the unit.
I brought it home and a few weeks later started it up and ran it for between 5 and 10 minutes.
As suggested by the salesman, I planned to remove the 2 month old gas this month and put fresh hi test in and run the unit for a bit. The guy recommended I do this every two months.

I try not to store anything with fuel in it, particularly if it is
E10. I suppose you can use a stabilizer but I think dry is better.
I am also not sure there is any advantage of high test in a low
compression engine.
I am actually pretty happy with the propane conversion. No gasoline at
all.
On a little genny like that a 20# bottle would not be unreasonable and
if you got a bigger one it would run a real long time. On my 5.5KW I
figure the propane burn is about 1.6x that of gasoline gallon for
gallon.