Vehicle Care

Engine Cleaning

~1min read

Engines operate more efficiently when they are clean, because grease and dirt build up on them. Keep the engine cleaner than usual.

When cleaning:

  • Use caution when using a high-pressure washer to clean the engine. High-pressure fluid can penetrate sealed components and cause damage.
  • Do not spray a hot engine with cold water to avoid cracking the cylinder block or other engine components.
  • Spray Motorcraft Engine Shampoo and Degreaser onto all parts requiring cleaning and rinse with pressure. In Canada, use Motorcraft Engine Shampoo.
  • Never wash or rinse the engine while it is hot or running; water entering a running engine may cause internal damage.
  • Never wash or rinse the ignition coil, spark plug wire, or spark plug well or the area in and around these components.
  • Cover the battery, power distribution box and air filter assembly to prevent water damage when cleaning the engine.

Test yourself

A quick Ford Explorer quiz: every answer comes with an explanation and a link to the manual page.