My 4BT has developed a small coolant leak directly below the water outlet. It is running fine. Before I replace the head gasket, I plan to see if Aluma-seal will fix it. Anyone else ever seen or heard of one leaking like this?
My 4BT had a leak in the same location. When I pulled the head I found the head bolts in that area badly rusted. I had the head checked for leaks and found several cracks in the head. So I installed a reconditioned head, new head bolts and a Cummins gasket set.
You really rained on my parade! If that's the case with mine, I'll do the stop leak and perhaps that will buy some time until spring. It seems surprising, I would think that the maintenance program this truck had would have had good antifreeze to keep that from happening.