One thing that seems to help with keeping the windows clear is to use RainX. I clean my windows and apply RainX every month or so.

I am with you on keeping things factory spec, but it is a struggle when cars get this old. In general, this vehicle is not too hard to work on. I always use MB/OEM parts when I do repairs, and if it is above my head or I dont want to deal with it, I bring it to my mechanic who is a MB master mechanic. You probably already know this, but having a Mercedes mechanic is a must! I wish I met my mechanic 8 years ago when I bought the car, he would have saved me a lot of headaches and money!

Not sure if you know this already, but there are three big ticket items that go on this model, (head gasket, reverse in tranny, wiring harness). Have you had any issues with these?

If you ever have any questions, feel free to shoot me a message, I have dealt with a lot of different issues with this car, and have owned it for many years. I try to get on the forum every week.

Take care