I have our Automatic car back on the road and running great so I hope to start working on this again soon. I plan to get the old gas out of it first and then flush out the antifreeze the best i can. This stuff is the nastiest antifreeze I have ever seen. Not dirty, just crystallized and hardened. The gas is also some of the worst I ever smelled. Has 3/4 tank of gas from 1974. If I can stay on this project I hope to have it started and running in the next week or two.