High-Quality Fuel Is Required. Every™ Engine.
The three-number coding system 18/16/13 corresponds to the number of particles of a size greater than 4, 6 and 14 microns per milliliter of fuel, respectively. A micron is the unit of measurement assigned to the size of unwanted particles in fuel. Particles 4 and 6 microns are so small they are impossible to see with the human eye.