Ive noticed foaming in my radiator and am wondering if changing the cap
from a 15# to a 7# will let the pressure bleed off easier.
rad is new and car runs mostly cool (165-175)
But there seem to be alot of pressure in the rad and it shouldnt be puking coolant at such low temps.
Im thinking the head gasket is starting to go.
If thats the case do any of those pour in sealers actually work
or is it time for a teardown??

Bob
67 Caliente 289 w 12:1s etc