My 4 Runner is sitting at 150,000 miles. The truck has been great over the last 9 years that I've had it. My question is about maintenance for a somewhat of a high mileage vehicle (we no toyotas can go for much longer though ) I have no problems at all at the moment but was wondering if I should replace all fluids? I'm not very mechanically minded and even if I was...I don't seem to have the time to do it myself. So, what fluids (please list them) would you consider replacing? Anything else I should consider as well.