hope this is the right place, never posted on anything other than my wrangler, but
looking at nissan pathfinder. overheating, overflows out of resevoir tank, not visible leaks at all. did pressure test, no leaks, had test done to check for exhaust gas in coolant and none. shop is wanting to tear in as they suggest it's heads or head gasket.
with no leaks anywhere, this sound like right place to start??