I had some work done to the head on my chevy 235 and when I put it back on, I got a coolant leak coming from the second to last bolt on the driver side. I thought my head gasket was bad, but then I thought the threads may be going through the water passages. Is my hunch right, and if so, which bolts need thread sealant? I can I just take them out one at a time add sealant an retorque?
