These are the cleaning products I used to clean the engine. The one on the right is the cleaner and the left one is the detailer. If you just want clean engine all you will need is the engine cleaner. Just spray the engine and 15 mins later hose it down with water and watch all the dirt come off. If you want your engine compartment to shine than you can use the engine detailer. They both cost around $5ea at Autozone..