I just bought a 2007 Mitsubishi Outlander with 41,000 miles on it. It's been inspected and has brand new brake pads, resurfaced rotors, rear engine seal, and tires on it. The rear engine seal had a seep, so the dealer replaced it. I'm trying to familiarize myself with the fluids and regular maintenance. If I need to add any brake, power steering, or coolant to it, what should I do? I'm not asking about the procedure, but rather should I drain them completely and replace the fluid so that I know I'm not mixing fluids, or is it okay to add the proper fluid on top? I just don't know what has been used in it. Maybe it's still the original fluids?