What brand of "mouse milk"?

Any one have a block seal product that they have personally tired and had luck with?

After 20 years and 145K miles my wife’s 3.0 Voyager has a leaky head gasket.
Iron block and aluminum head, right? Leak at head and block.
I don’t have the time to work on it and she needs a new vehicle anyway.
But if I can get the Voyager to stop leaking, I might run around in it sometime.
(Not likely, since it wouldn't be an A body)
She bought the van new in 1988. I told her to break out the checkbook and go get a new Chrysler again. That lifetime power train warranty fits our buying habits just fine.