No Pain, a suggestion. I buy tire wet in a spray can of various brands. After the engine is washed and dried, I spray all of the plastic with the tire wet and let it dry overnite. I did this on my 06 GMC, and when I sold it 12 years and 126K later, the buyer remarked how the engine compartment looked like new. The tire treatment keeps dust and mud from sticking. Of course, spray as little on belts as possible. It wears off of them quickly if you do get any on them.