Piston for internal combustion engine

A piston (3) for an internal combustion engine (1) of an automotive vehicle. The piston (3) has a piston ring (4) and a piston skirt section (3a) each of which has a sliding section in slidable contact with a cylinder bore section (2a) of a cylinder block (2) in presence of a lubricating oil. The cylinder bore section (2a) is formed of eutectic or hyper-eutectic aluminum alloy. Additionally, a hard carbon thin film is coated on the sliding section of the piston (3) and contains hydrogen atom in an amount of not more than 1 atomic %. Here, the lubricating oil contains at least one selected from the group consisting of ashless fatty acid ester friction modifier, ashless aliphatic amine friction modifier, polybutenyl succinimide, derivative of polybutenyl succinimide, zinc dithiophosphate, and derivative of zinc dithiophosphate.