Use only DEF certified by the American Petroleum Institute (API) such as Motorcraft ® DEF or equivalent. Look for the API certification trademark. For more information on this system, refer to Selective Catalytic Reduction (SCR) System in your Diesel Supplement. Fuel Filter Your Ford truck inc...
Rear: 0.354 in (9 mm) If your brake fluid looks cloudy, you should replace it. That deserves a whole article on its own, but you'll needMotorcraft PM20or another DOT 4 brake fluid. 1
Ford recommends you replace your engine air filter every 30,000 miles. It's really easy to do, and should only take a few minutes. Note:The owner's manual states that the correct air filter is the Motorcraft FA-1914. However, at least one printing of the Fiesta ST supplement recommends ...