Whether you're about to work under the hood, prep your ride for resell or are just overdue for a custom detail, deal muck and grime it's final blow with GUNK's Engine Cleaner Foamy. It's foaming action quickly removes dirt, dust and road grime Specifically designed for engines with plastic covers, Engine Cleaner Foamy is safe on plastics, under-hood rubber and paint. GUNK, makers of the toughest cleaners on the planet for over 60 years, is one of the #1 brands in engine degreasing.