I almost bought a GX550 OT, but when I consider what good condition my '09 LC200 is in, I've decided to refresh her a bit. So I'm about to let the dealer put new OEM rear shocks and front lower control arms on my trusty old friend. And I don't know when the last brake or power steering fluid was changed but they're pretty thick and cloudy. Should I do them? And how about front and rear differential drain and refill? Tranny? Spark plugs? Bottom line, I can see keeping the 200 another couple of years. In the meantime I want to do her right. What would you recommend?