I am using Evans waterless coolant and in any case, if there were a problem with the silicone beads it would be the ones around the water passages and it would be coolant leaking out, but that is not the case.
I do not believe that
oil is getting past those silicone beads around the
oil hole to the heads but rather just migrating in between the rather hard copper gasket and head.
That is my theory. Unless the
oil comes from somewhere else and travels along the unions to the lowest point and down the block from there.
