For racing cars with atmospheric or turbocharged engines, race engines operating at very high temperature and high rpm : race on tracks, endurance races; Le Mans 24H, rallyes, rally raid, Paris/Dakar, dirt or ice races.
For engines producing very high fuel dilution in the oil, gasoline or diesel engines, turbocharged, direct injection and catalytic converters, vintage cars.
Stock images used. Actual product may vary.