Should be fine on more modern cars (ie. Everything with fuel injection, newer than 1990)
I run gas that's probably 1-2y old in my pickup and never had any issues.
Just beware that ethanol might hurt rubber lines if you have them. So best to mix it with some new gas over time
Don't know anything about unix rice, but looks nice. Clicked because i didn't see unixporn and was expecting literall rice