BEST RTV SEALANT FOR TIMING CHAIN COVER AND TRANSMISSION PANS???'s

I use Permatex Ultra Black on EVERYTHING!!! NO leaks!
 
I use Permatex Ultra Black on EVERYTHING!!! NO leaks!

This. But I like GM reusable trans gaskets with no sealant. Not sure if that's an option for this older stuff though.
 
I also use Permatex Ultra Black on most stuff, but I use non setting Universal Blue Hylomar on transmission gaskets if needed and it also worked well sealing my vacuum pump on the Monte.
 
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