Wow. I knew these engines were not the best, but I would not have suspected something like this. What you say, though, makes sense.

This fellow is a Doctor in a rural area and travels about 80,000 miles a year so he was wanting something comfortable and thrifty. He also collects Mercedes (his current project is a 1970's 600) so he may just want to have the engine replaced.

I will do the research you recommend and get back with him.

Thanks so much for the info.