Hi all, My gas tank was done by a company called Re-nuz-it many years ago. I have a filter at the rear wheel and I am planning to install another at the carb. I was playing with the car today and after a vision last night I checked the wiper vacuum line at the manifold and found the line very loose this is why it was running funny, vacuum leak. I also advanced the timing just a little. I have not driven the car. I am going to install the fuel pump as I think the crud I found in the carb has to be in that pump. Let's cross our fingers and toes. Cleaning that tank has crossed my mind. I might do it over the boring winter months. Hey Greg, I solved the problem of stale gas when I can't drive them I run them out of gas. The only car I must drive one more time is the 1966 Pontiac 2+2 convertible, That thing is exciting!