2018 Mustang Owner's Manual

Maintenance

Only use oils certified for gasoline engines by theAmericanPetroleum Institute (API). An oil with this trademark symbol conforms to the current engine and emission systemprotection standards and fuel economy requirements of the International Lubricants Specification Advisory Committee (ILSAC). To top up the engine oil level do the following: 1. Clean the area surrounding the engine oil filler cap before you remove it. 2. Remove the engine oil filler cap. See Under Hood Overview (page 227). Turn it counterclockwise and remove it. 3. Add engine oil that meets Ford specifications. See Capacities and Specifications (page 291). You may have to use a funnel to pour the engine oil into the opening. 4. Recheck the oil level. 5. If the oil level is correct, replace the dipstick andmake sure it is fully seated. 6. Replace the engine oil filler cap. Turn it clockwise until you feel a strong resistance. Note: Do not add oil further than the maximummark. Oil levels above the maximummarkmay cause engine damage. Note: Make sure you install the oil filler cap correctly. Note: Soak up any spillage with an absorbent cloth immediately. ENGINE COOLANT CHECK WARNINGS Never remove the coolant reservoir cap when the engine is running or hot.

WARNINGS Do not put coolant in the windshield washer reservoir. If sprayed on the windshield, coolant could make it difficult to see through the windshield. To reduce the risk of personal injury, make sure the engine is cool before unscrewing the coolant pressure relief cap. The cooling system is under pressure. Steam and hot liquid can come out forcefully when you loosen the cap slightly. Do not add coolant further than the MAX mark. When the engine is cold, check the concentration and level of the coolant at the intervals listed in the scheduled maintenance information. See Scheduled Maintenance (page 433). Note: Make sure that the coolant level is between the MIN and MAX marks on the coolant reservoir. Note: Coolant expands when it is hot. The level may extend beyond the MAX mark. Maintain coolant concentration within 48% to 50%, which equates to a freeze point between -29°F (-34°C) and -35°F (-37°C). Coolant concentration should be checked using a refractometer. We do not recommend the use of hydrometers or coolant test strips for measuring coolant concentration. Adding Coolant WARNINGS Do not add engine coolant when the engine is hot. Failure to follow this instruction could result in personal Never remove the coolant reservoir cap when the engine is running or hot. injury.

230

Mustang(CZG)Canada/UnitedStatesofAmerica,VehiclesBuiltFrom:07-08-2017, JR3J 19A321AAenUSA,Editiondate:201707,FirstPrinting