Old gas, How long can gas be in the tank and still good Options

[willieg]

I am just about finished doing a five lug conversion, with roll bar, with custom door handles, blah, blah blah. As a result, the car has been off the road for about a year. I drained the gas tank and have replaced with fresh gas. But I was wondering how long some of you have left gas in the tank of a fuel injected car and not had any problems when you restarted the car. Just wondering if I was too hasty.

[Chris914n6]

My experience has been for pure gas about 5 years before it turned to varnish.
The e10 we have now not even 6 months. Because it separates it needs to be mixed every week or 2. The ethanol will eat thru non-ethanol rated hoses where it concentrates in low spots. The hose gets soft on the inside then will suddenly crack and spray.
The fuel pump may or may not have ethanol safe seals/orings.
Fuel rails/injectors seem to do ok as there is no air that far into the system. Might get sticky but fresh gas will clean it, it usually runs fine after 1/2 hour of idling.