Will bars stop leak radiator and intake help my blown head gasket?

Do you have white smoke coming from tail pipe? .. Is pressure blowing coolant out of the plastic coolant recovery tank? .. Suspect intake manifold gasket failure leaking coolant into the crankcase oil .. Intake manifold gasket failure is often but mistakenly assumed to be cylinder head/gasket failure .. Local independent repair shop can do a *combustion leak test* to confirm head gasket problem .. The stop leak may hold for a few days at best .. Mechanical repair IS going to be required!