What kind of fluids does my 1990 dodge d150 takes?

Your 1990 Dodge D150 typically requires several types of fluids. It uses conventional motor oil for the engine, usually 10W-30 or 5W-30, depending on the climate. For the transmission, it generally takes Dexron III ATF, while the differential may require specific gear oil, often 80W-90. Additionally, you'll need coolant for the radiator and brake fluid, usually DOT 3 or DOT 4. Always check your owner's manual for exact specifications.