STIHL recommends a mix of 50:1 high-quality 89 octane or higher unleaded gasoline to STIHL engine oil.
This same mix ratio should be used during break-in.

STIHL 2-cycle oils are premium quality, designed to deliver the highest levels of engine protection in today's high-performance, air-cooled 2-cycle and low emission engines. These engine oils contain a fuel stabilizer and a mixing agent (solvent) to aid in mixing with motor fuel (gasoline). STIHL oils are fully compatible with oxygenated fuels. STIHL 2-cycle engine oils are packaged in 2.6 oz., 5.2 oz., 6.4 oz., 12.8 oz., 1 gal., 5 gal., and 55 gal. containers to conveniently meet user fuel consumption needs.
STIHL recommends a mix ratio of 50:1 high quality (89 octane minimum) regular unleaded gasoline to STIHL engine oil.

STIHL High Performance 2-cycle Engine Oil

STIHL 2-cycle high performance oil is a quality 2-cycle engine oil developed for all STIHL products and especially suitable for professional chain saws.

STIHL HP Super 2-Cycle Engine Oil

HP Super is a partial synthetic blend 2-cycle engine oil designed for high performance power tools and chain saws with excellent "low smoke" characteristics plus superior lubricity in comparison to other low smoke oils. STIHL HP Super is certified ISO-L-EGD and JASO-FD and exceeds API TC certification.

STIHL HP Ultra 2-Cycle Engine Oil

HP Ultra Oil is a fully synthetic 2-stroke engine oil specially suited for high performance chain saws and power tools. This oil has outstanding engine cleaning characteristics, plus "ultra" superior lubricating qualities in comparison to other 2-cycle engine oils. It is ideal for use in STIHL 4-MIX™ engines. This oil is biodegradable, degrading by 80% in 21 days.