So the car has been sitting for years and now I need to replace my Bonneville. I found an additive on line called PRI and it'* designed to refresh gasoline. The problem is, once I add the additive how do I mix it up? The tank is more than 3/4 full, I thought a hose inserted into the tank might work, then blow air in to stir up the fuel, but with these anti-siphon tanks I am not sure it would work. So I thought maybe I could disconnect the fuel return line at the fuel rail and blow air in there. Problem is I don't know where under the hood thst is and if it would work. Any ideas.
Jim

Just dump it in and start it. The returning fuel will mix it for you.

Mike, I had it running off a jump start, but wanted to mix this in before I start it again. It'* been sitting for a long time, when I moved the car, the tires left rubber on the floor under all four tires. So after the gas, it will get a new battery, an oil change to synthetic and new tires. With only 14,700 miles Ihope I can put off a brake job for awhile.
Thanks for the reply.
Jim

Mike, it worked as you said it would. I am now driving it and have retired my 01 Bonneville. Is there a sway bar available for the Cadillac, it just doesn't handle like the Bonneville.
Jim