I like to think of myself as a good car owner, I take care of my vehicles, and they take care of me. Today while changing the oil on one of my lesser used vehicles (which I'm trying to change, want to make it my daily), a 2004 Toyota Camry 4 cyl, I realized I've never changed some basic stuff. Now this car was bought by my dad originally, and has been pretty well kept. It's a great little car and has never left anyone stranded or needed any major repairs. I've owned it the last 2.5 years and I've really tried to keep up with the maintenance on it. I put new brake pads and discs on all four corners, new used tires on it, new plugs, new air filter, new valve cover and oil pan gaskets, a new O2 sensor, cleaned the throttle body and changed trans fluid all with in the last few months. However today I realized the car still has the original coolant and thermostat in it with 173,000 miles! It never overheated, so I never thought about replacing them, even though they should have been done at least 3 times by now. I felt bad for my reliable little car upon realizing this, so I think my next move is to go to NAPA and buy some Zerex Asian car formula coolant and drain and fill as much as I can. I'll get an OEM thermostat from the dealer, I've had issues with aftermarket ones. Has anyone else gotten so consumed by their project cars they forgot to take care of their daily driver?