A clean engine looks great
It’s easier to spot potential trouble before it becomes a major problem. If your engine is filthy, you’re not going to know if that small fluid leak has been there forever, or if it just appeared. Clean engines make leaks, cracks and other problems easier to spot.
Remove road salt and debris that can lead to corrosion if they’re allowed to accumulate.
Remove debris that can cause hot spots to form on the engine and its components, shortening their lives. Prevent the build up of combustible materials, such as leaves or oil, that are fire hazards on the road and in the garage.
A clean engine is more enjoyable to work on and look at.
A vehicle with a clean engine and engine compartment has a higher resale value.
Don’t use a high-pressure wash, as it can damage the sensors.