At the risk of starting another long thread of controversy, I have a
question about Barr's stop leak.  I have just begun to develop a very slight
coolant leak, looks like from the heads.  There are drops now noticeable on
the bottom of the engine, but no puddles yet on the ground, and the total
refill / overflow tank drop is maybe 1/2" per week.

My mechanic says use Barr's leak, that the pelleted type was the stuff that
clogged radiators; their newer liquid will not.  I am dubious!  Anyone out
there with actual experience or scientific knowledge of this stuff?  I'd
like to postpone pulling the heads as long as I can, but neither do I want
to start replacing other expensive components like the radiator.

Thanks,
Jim Creech
87 Westy GL, 2.1