... , like electrical contacts, car ignitions, motorcyle engines, outboard motors and tools.* Cleans & Protects: Dissolves grease, tar, gum, adhesive, crayon marks, ... and corrosion on bikes, chrome parts, motorcyles, outboard motors and tools.* Frees Sticky Mechanisms: lubricates and un-jams door locks, ... office chairs.WD-40 similar quality promise. Loading Ref.: Certificates: Multi purpose lubricant