STIHL HP Ultra 2-stroke engine oil is a fully synthetic oil for continuous use under the highest loads. It is suitable for professionals and domestic users to use in forests, and supports low-residue combustion in the engine. The engine oilis very low in sulphur and highly biodegradable(more than 60% in accordance with OECD 301 B), and it offers excellent engine lubrication to make starting your power tool easier. Thanks to excellent corrosion protection and high cleanliness due to low combustion residue, STIHL HP Ultra 2-stroke engine oil supports a long service life for your engines.