[Ledbo8]

I have a recently rebuilt 351C 2V hardly broke in. Maybe 10 miles since initial break in. I noticed a small amount of coolant in my crankcase. I don't think i ran it long enough to create the "chocolate milk" as the dipstick isn't frothy but the oil is definately thinner with a green tint. I do have small drops of water out of my exhaust as well. I initially thought head gasket, but it passes a block test with no hydrocarbons in the radiator. Any ideas or obvious starting points? Before the block test I changed the oil just to be on the safe side and there is now coolant in the oil agaon, however not alot. It'll hold pressure in the radiator for days. I do have the coolant restrictor in place.

[luis12]

did you put enough thread sealant on the cylinder head bolts some times it leaks coolant even if you torque them properly

[66GMC]

I'm pretty sure that you are aware of the fact that glycol will kill engine bearings, But I'll mention it anyway.

Good luck.