Thanks for all the good things to look into. I never thought about the electrical ground issues. The car shows no other signs of electrical problems.

Not sure where the traveling to Chicago theme came from. I usually pull the radiator myself and take to the shop. Although last time I did pay my longtime mechanic to do it just in case I was screwing up. He did use a high percentage antifreeze last time. Before I was following the 50/50 distilled water and prestone formula.

Glenray is great, but a little out of my price range right now.

Thanks for all the input!

Mark