Awhile back, Honda tried "...reducing friction..." with the HF engines only to endup with excessive oil consumption, early piston wear, and eventually pollution due to the oil consumption.
Awhile back, Honda tried "...reducing friction..." with the HF engines only to endup with excessive oil consumption, early piston wear, and eventually pollution due to the oil consumption.
What has become popular in the performance market are coatings for different parts of the engine including piston skirts and bearings.