We understand the needs of engines: Our tailor-made fuels and oils are specially developed for use in STIHL products and garden tools. They ensure optimum performance and long-term maintenance of your STIHL equipment. In order to offer you the best possible performance and a long service life of our equipment and tools STIHL develops and tests lubricants and fuels in its own laboratory. They are tested on test benches and in practice and are continuously improved in collaboration with users. This is the only way to use all the necessary skills to achieve optimum results for man machine and the environment. We call this principle the STIHL Optimal System.