Great point. I must admit I come here looking for easy and quick answers. As a non-diy'er I hope I can avoid spending tech dollars and find the easy fix. However great the advice here is (and it is great), without real diagnostic equipment and expertise on my part. People can only respond based on what I tell them.
I'll pull the ovp and see what happens first.
'88 560SL Pearl Black/Java 152K
'94 E320 Anthracite/Grey 89K
'94 E420 Black/Bamboo
'71 280SEL 4.5