SONAX – Engine Cleaner

Reviews for SONAX Engine Cleaner are overwhelmingly positive, highlighting its effectiveness at removing oil and grease from engine bays while being safe for plastics, rubber, and electrical components. Users praise its easy spray-on, soak-and-rinse application, noting it leaves a like-new appearance and is a powerful, solvent- and phosphate-free formula. Some sources note that it’s important to avoid direct contact with electrical systems and air intakes and to apply the cleaner to a cool, dry engine.