I've never been one to use Rainx but have heard others taut it's benefits.
Yes indeed, it is important to have a good and dependable (honest) mechanic anytime you are driving an 'older' car. But we drive one of the finest cars manufactured and if treated well, they will return many, many worry free miles to us!
I am aware of these big ticket items! Mine still has the crappy, original harness but was told by my mechanic to leave it alone until it starts acting up. Just hope it doesn't happen on way to FL next week! Although, I think they give some warning to its demise? I don't understand MB engineer's decision to use a "bio-degradable" insulation on the harness! Doesn't make a bit of sense to me...
My car was owned by a 91 year old gentleman and it had been driven only 1000 miles the previous 6 - 8 mos before my purchase. It's not always a good thing buying a low-mileage car if it is a decade or more old because other factors come into play, such as seals and gaskets, wiring insulation, and suspension parts deterioration from nothing other than time (age). But, we take the gamble! I had a pre-purchase inspection done by a local MB dealership and was told about these issues but that they weren't currently showing any signs of failure at the time (~ 16 mos. ago). So I am aware of them and will cross those proverbial bridges when they come...
Thanks for the offer to counsel with you regarding 'issues'! Perhaps a PM conversation would be more appropriate. Have a great and safe Merry Christmas and Happy New Year

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Dale
1995 E320 Wagon 185K [SOLD]
1988 260e Sedan 165K
2007 F-150 XLT 188K [SOLD]
2003 Harley Davidson FLTRI Anniversary 26K
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2006 BMW 330Ci 110K - [SOLD]