well what I did was take off my air filter housing and I covered everything electrical ( and the spark plugs + ABS) with plastic bags. It may seem like a lot, but really its not, just take about 5 or 6 bags out with you and cover everything and twist the bag so it doesn't come off. Then use a can of Easy-Off (I chose the Easy-Off Heavy Duty) comes in a yellow can and spray that on and liet it sit for about 5 mins. It helps if the car is warmed up a bit so the grease and gunk come right off......and no, the plastic bags won't melt, just don't put them over anything hot. I actually remember now, that I did not cover my spark plugs, I was just really careful around the area. I did cover the belt and alternator though as well as the intake. Does anyone else have something to add? Hope this helps you. Oh and 1 more thing, take a couple of old t-shirts (not rags, as the lint may come off of them) to wipe down the engine.

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1990 190E 3.0L