Stihl 2 stroke Lube is a specially developed lubricant for air-cooled two stroke engines. It can be mixed with leaded or unleaded petrol. The formulation utilises a mixed additive system to ensure a minimal ash deposit formation. Stihl 2 Stroke Lube provides the following performance benefits: It contains diluent; mixes easily with fuel; controls corrosion excellently; has a minimal ring wear and piston scuffing; cleans burning, assisting in maintaining cleaner combustion chambers, ports and mufflers.