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Hello, Do it right!!! Why waste you time with different blends of snake oil and the like. Pull the head and do it right. You want to look into the bores and valves anyway. This nonsense of rocking in road gear and 40, no dummy, 45 percent tranny fluid is all just different ways to wreck parts.
Suppose that there is debris keeping the piston from reaching top dead center? The amount of force you put on the components is incredible if the piston is just 5-10 degrees from reaching top dead center and your reefing of the crank with a bar. Too many people take this ordeal as a personel vendetta to free an engine. I'll take the road less traveled. It has less bumps and ruts. You can pull the head, inspect everything and if the bores and pistons are good ,usually not, do a valve job and mill the head, slap the head back on with new gaskets and spend less than a few hundred bucks The reason most engines are locked is because they were put out to pasture for a reason, needing to be rebuilt. Why wreck the parts that may still be good? Usually the most expensive ones at that. Why the heck would turning the engine the opposite of normal rotation help any? If you knew which piston was stuck you want to free it on the downstoke. This could be clockwise or counter clockwise. My not so humble opinion. Mark
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