Never wash engine when hot, warm is ok. Never use soap unless engine is very cool, and rinsing well is a must.
Never spray engine gunk cleaner on these engines. Much to harsh.
Never spray directly into alternator.
Never hold wand to close to painted surface on engine.
Never hold wand to close to hood pad, as it will destroy it with ease. At least three feet away from this item.
Never spray directly onto extremely hot exhaust, as this could crack them, even headers can crack. Mist them with water first to cool them gradually.
Never wash engine and not finish up with the car, as nasty oily residue will be all over convertable top and glass.
If the car wash has spot free rinse, use it as water spots are really bad about staining aluminum.
Dry most of the engine off as to prevent spotting.
Do not wash the engine on a regular basis. This is just not a good thing to do. To many problems. Once every 6 months or year. Blow it off with a blow nozzle.
The above IMO
