tcoop wrote:
If I forgot to add fuel stablizer in my fuel tank, can i go back and
add it
to the tank after the gas is already in the tank?

Yes, you can. But it might be too late if you take into consideration
that gasoline has a "shelf life" of about 30 days.

You might be best redoing your entire winterizing procedure, or just
going straight ahead with an early spring start up procedure. It's
March 13th, so you would probably be up and running, normally, in
another month at least, or sooner.