In article ,
The Daring Dufas wrote:

As for
small portable generators, you always use fuel stabilizer/
treatment if it's a gasoline or diesel powered.

Contrary to popular belief, Diesel Fuel does NOT require ANY
Stabilizer... as long as it is Clean, in the first place, and
not sucking water into it, in the second place. Water will be taken out
of the fuel, by the Primary and Secondary Fuel Filters. So as long as it
(water) is minimal, it goes away, when you change the Filters.