Ready-mixed fuel (1:50) for all STIHL engines, optimal performance, best cold start ability, maximum acceleration over the entire rpm range, best running characteristics even with a sudden gas change. With STIHL HP ultra premium oil for exceptional engine lubrication and extreme cleanliness, fully synthetic and biodegradable for optimal performance and long service life.  Can be kept in storage for at least two years. Reliable top performance – STIHL engines and STIHL MotoMix are made for each other, all imaginable uses have been put through rigorous tests.