My 49 Chrysler flat 6 recently locked up. I am still in the process of checking it over, and I plan on pulling the oil pan for a look next. Here's my question, I read threads here before that mentioned using everything fro Diesel to Coke. My neighbor said he had heard that tomato juice works. What do you think? I pulled the head off 2 weeks ago, and squirted some thin machine oil on the pistons, and all but 1 drained. Then I poured 10w40 and the same thing happened, but took longer. It's probably that one or maybe 2 that are sticking. Think I can free them up with one of these concoctions before I have to pull pistons out?