Reduced Friction, Lower Temperatures Reduce Wear
Low-Friction coatings, also known as dry-film lubricants, are split into two types: Self-Lubricating and Oil Shedding. The self-lubricating type of dry-film is applied to engine parts such as piston skirts, valve springs, camshaft lobes, engine bearings, wrist pins, valve stems oil and fuel pumps also parts like ring and pinion gears, transmission gears and timing gears.
These materials hold oil on the surface of the parts and have a very low coefficient of friction. Applied to a piston, the dry-film reduces piston-to-cylinder bore friction, which also reduces bore wear. These thermally bonded coatings are comprised of several high load-carrying lubricants.
In addition to excellent lubricating qualities, they also aid in more even movement of heat over and away from the treated part. This characteristic is especially beneficial on valve springs, extending the usable life of the spring beyond the more traditional polymer type coatings used in the past. One of the most important properties of this coating is the ability to lubricate in a very thin film, eliminating the need to re-clearance parts as is needed with other coatings.