About year ago I drove the X5 (01 3.0) with 130k on it from New York to boston to Indiana. I noticed I was loosing a little bit of coolant which was caused by a small crack in the expansion tank (car wasn't heating up or anything, temp gauge was showing normal) it wasn't bad enough for me to get it fixed right there and then. I just kept an eye on it and filled it up every day or so until I got to Indiana and fixed it. Considering you just purchased the car, as folks suggested above, get the coolant flushed, oil changed, brakes checked and you should be good to go. And when you get to areas with snow, slow down and drive it as if you are in a sedan.. don't be one of those ppl with SUV/Truck that drive in the snow as if it's a dry and sunny day (just a friendly reminder and not saying you are one of those people :-) )

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2001 BMW X5 3.0 Sold
2008 VW jetta S
2006 Lexus Rx400h