Despite the fact that the engine rides around seemingly protected by a hood made of steel, it rides exposed to the same elements as the underside of your vehicle. All the muck and crud that gets stuck there gets stuck to the engine too.
In addition, the engine does a good job of making crud of its own. Drive belts and clutches make dust as they wear out. Tires and brake pads are also expert dust producers. Engine heat combined with combustion vapors turns this gunk into a crusty baked-on coating.
The benefits of keeping the outside of your vehicle clean are obvious to the eye. Whereas there are obvious visual benefits to a clean engine, there are also a few added bonuses to getting rid of engine grime. An engine caked in crud can run hotter than it should. All that crud acts like spray-on insulation, and keeps combustion heat from escaping through the metal the engine is made from.
A second and less obvious benefit is equally important. Wet, greasy, crud concentrated in a few spots on the engine may be a sign of oil, coolant, or even fuel leak. Cleaning off the collected debris can help determine the type and source of the leak, and assist you or your mechanic in making repairs.
Another plus to eradicating caked on engine crud is actually being able to see the "full" and "add" lines on the brake fluid, power steering, and coolant reservoirs in order to keep tabs on fluid functions.
•Degrease, clean, and dress engine compartments to a showroom look
•Condition all engine rubber and vinyl
•Condition hoses and belts to restore and keep protected from driving and wear
•Includes Full Service car wash