Thanks for all that great advice. I hope you are right Benzmac. I feel beter already... dreaded having to repair a water jacket.
I will take the head into a shop and have it completely checked out. A machinist friend of mine has recommended a shop to me.
And I will check the hoses. Will flush the system and then look for residue.
Dave I need your e-mail address so that I can send a pic "as an attachment" to you.
1993 190E 2.3
2000 Toyota 4x4 Tundra