Supton - definitely take a peek behind the plastic before you decide to put money in your CRV. My 2006 looked great underneath (thanks fluid film) and outside, but when I opened the cladding, the body was rotted through. It took a lot of construction adhesive to get it back on!
At about 200k I opened the valve cover to adjust the valves and all were in tolerance except one was a just a tiny bit tight. I drove a lot of highway miles, so 10k OCIs were like every 8-10 weeks. I went from 0w-20 Amsoil OE to 5w-30 Amsoil OE and the engine stayed nice and clean. Rarely needed any make-up oil between changes, but the level would drop a little. Drove it daily to 303k miles.
I went through brakes like every 6 months. And a barrage of other issues: bushings, exhaust, catalytic converter, electric windows and switches, starter, alternator, battery and cables, etc.
Gave it to my niece last year and had a pile of trouble with the power steering, which killed the alternator and various other bits. I fixed it all and she traded it in for a new Civic. Frankly, I'm glad its gone.