V-Twin TechniPlater 10W/40 10W/40 Multi-viscosity Klotzr American V-Twin Synthetic TechniPlater Lubricant is custom-formulated for the Harley Davidsonr air-cooled engine. Exceeds all warranty requirements for Harley Davidsonr engines. Use of this lubricant provides certified warranty compliance and protection. Will not shear like petroleum oils and stays-in-grade even under the most stressful situations. The high power output and piston speeds of the V-Twin engine demand the protection Klotzr TechniPlater advanced lubrication technology provides.