Going to start restoring my gas tank from the 64, I know the first thing I should do is see if it leak by my guessing filling up with water and letting it set a few days. (can't do that just yet or I've a 16 gal ice cube) Will do this in the end of Feb.
My question is if it don't leak what do I clean it out with??? This tank I bet hasn't had new gas in 8 years and sure theres sludge in there. Also what takes off undercoat good??? This stuff comes off hard and don't want to get too agressive and put a hole in it myself. I would like to clean it good to paint it. I already plan to have the sender rebuilt