"Ran when pulled"

In my twisted mind if there is any significant amount of water in it, it will find the lowest point in the engine...theboil pan. If not much was in the pan assume good?
Not sure how to remove scale?? Maybe oil up cylinders, remove pistons? Does it rotate?
See all my question marks???? It means I dont reallu know, but 318's are good engines and can take a fair bit of abuse.