Driven Racing Oil KRT (formerly Joe Gibbs KRT) is a fully synthetic oil developed for 4 stroke kart engines such as the Honda GX range, Honda clones and Briggs & Stratton (excluding World Formula and Animal engines). Recommended by some of the most renowned Honda engine builders, KRT features a friction modifier package which increases high temperature durability and delivers dyno proven power gains. This makes it a great choice to gain advantages in pro kart and cadet classes where engine modifications are forbidden.Driven KRT also provides a high oil film strength which helps protect engine components against wear under the high loads encountered in race engines particularly in endurance races.Viscosity 0W20. Highly recommended for:Honda GX140, GX160 & GX200 as used in Pro karts and Honda CadetsHonda GX240, GX270, GX320, GX390 as used in Thunder kartsHonda Clone engines such as Loncin