I used up some 2 year old gas in my ole Dodge truck.
Dumped 6 gallons at time in when I would go to fill up..
It even had TCW 2 or 3 in it...
Trucks valves had never been cleaner!
This was many years ago when the truck had 50,000
miles on it. Today she has 285,000 and still going strong.
See ya, Ken