While the pistons are soaking, I suggest that you pull the oil pan off (you can leave the engine in the car) so you can clean out sludge and do an inspection.
Since these engines have a splash oiling system, there are oil reservoirs above all the main and cam bearings. Use a little mirror-on-a-stick to look at them. I suggest cleaning them out with Qtips. You want clean oil to flow into the bearings from these reservoirs.
With the pan off, you can also get some ATF into those reservoirs to soak down into the bearings.
Squirt some oil on the cam lobes and the bottom of the rods too.
;-) Dean
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