For a quicker (environmentally safer
) method, just pour 3 or three tablespoons of deishwasher liquid on a pot and bring it to boil, put your engine in and either cook on very loww for a couple of hours or just dunk it when its boiling and take out when its cool.... then use a wire brush to remove the deposits.
No use of lots of antifreeze and your wife's crockpot is safe
