Yeah, my car has about a 1/8" layer of grease on the entire passenger side of the engine compartment starting under the battery tray and flowing back to under the passenger seat. I've been using Gunk Engine degreaser for the first pass, then following up with Purple Power to finish. The Gunk product has taken the paint off in some areas. I was really trying to avoid painting the compartment until I have have the car repainted in a couple years. So I've eased back on the Gunk usage!