Should my radiator overflow be empty?
Should my radiator overflow be empty? So, you might ask how much coolant does my car need when empty? Your coolant reservoir tank should be at least 30% full. Most reservoir tank has min and max mark drawn on the side of the container. The most common cause of a coolant leak is a bad radiator cap, bad radiator fans, and loose radiator hose clamps. How to flush the radiator on a Ford F-250? Ford F-250: How to Flush Radiator 1 Drain old coolant. Open the hood. Remove the radiator cap on the driver's side of the engine bay. 2...