My car has 180k miles on it and, while it runs fine, I assumed it was likly that something was wearing out and I didn't want any surprises down the road. I took it in to Sun Devil Auto for an inspection and their recommendation on what to do to get another couple years out of it. Their answer was "nothing."
I went in prepared to spend a reasonable chunk of money and I would have believed about anything they told me given how many miles are on my car. I ended up leaving with an oil change just becuase it was that time.
The level of integrity they displayed was very incouraging and when I finally do need a repair I will be going back to Sun Devil Auto. This is a great example of honest business practices creating loyal customers.