A bit worried about long term costs and reliability - should I be?

[thstone]

Oil change is a very easy DIY and you can save $50-$100.

I'm doing my own water pump and thermostat this weekend. Could afford to have someone else do it but I feel like I know the car better when I do my own wrenching. And then I can guiltlessly spend the $550 that I would have spent on the labor on a couple of track days later this month.