The car did pretty well! We got back yesterday. A total of around 6k miles in 2 weeks, which was way too much, but it was a great trip. The only hitches were the exhaust separated at a joint that I put in when I went over a tall speed bump and scraped it. I was able to put back together quickly. Also, power locks stopped working temporarily (not much of a problem), and instruments stopped working (had to twist fuse to restore power). I ended up doing an oil change on the road. I had brought the filter with, and bought a cheap oil pan from auto zone, and delvac oil, and did the change in the parking lot. The car ran great, though runs a little rough at idle. We even took it over a rough road across a mountain range in Arizona to the town of Portal. The most amazing thing I discovered is that most of the oil leaks happen when sitting. When running it leaks or burns almost no oil. I ran it 4k miles in a week and the oil level was still full when I changed it out! I was glad all fluids had been changed and that it was well maintained. On some of the mountain passes on hot days it got a hair over 100 deg. C, and I would shift down to 3 to cool better running at 3.5k rpm. That seemed to lower temp 5 degrees or so.

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1990 300d 2.5 turbo
1995 E300d