Radiator fluid
Check radiator fluid only when the engine is cold. The radiator fluid should be up to the top of the filler neck of the radiator and the reservoir should be up to the full cold mark. Some systems don't have a cap on the radiator, so you would check it in the reservoir tank only. See your owners manual to be sure. Your owners manual will specify coolant type and color. If your coolant is not the color specified or has signs of debris consult a shop to have the coolant flushed. Use a coolant tester to check for freeze protection. These are available at most auto stores a 50/50 mix of coolant and water will protect to -34 degrees. Use only quality recycled premixed coolant or new coolant and distilled water. Coolant service life is usually 2 years or 30,000 miles.