Well what I do is buy some Gunk engine degreaser. Pull the car out in the street. You will want to have let the engine cool before doing this. Spray the engine thoroughly. Be careful not to get it on painted surfaces, but if it does it is aright as long as you don't let it sit too long. Let it soak for about 10 min or so then wash the engine and the front of the car well. That will clean you engine VERY good.