That chart helps a lot. Downloaded and saved it.
I keep telling friends and relatives who work on their own stuff that they make specific sealers for what your working on, and yet they keep buying the same one size fits all black or blue stuff over and over. Then they cry when their thermostat housing or transmission pan starts leaking again. Hello! It's not made to go up against those types of fluids. They don't want to buy the specific ones as they can't be used on everything is likely what the deal is.
Not disagreeing with you in any way but looking atthe chart, which sealer is one supposed to use when oil and anitfreeze are present. Think SB (as well as many others) Timing cover, Intake coolant passages etc.
Only ones I see that might work per the chart is the 90 or One minute sealers