Remember the Pontiac 400 that was full of water and stuck tight? (doing the unstuck) I got her working and it is very strong. But there is a stuck lifter tapping away and the rings must be rusted stuck because it is oil smoking on acceleration. When it gets put away for the winter I plan on filling the combustion chambers with ATF and letting it soak until next year. What would you recommend in the short term to get them loose?