[rbuckin111]

I just put a "supposedly" rebuilt 230 in my GMC and have been working the bugs out. My latest is I checked the coolant level and it was way down. There is no evidence of a fluid leak on the outside or underneath. This leads me to think (shudder) that it is leaking inside somewhere. How do I figure out where it is leaking and fix it without the "replace and hope" method? I appreciate any wisdom you can share with me.