Full synthetic formula delivers maximum high-temp performance and engine protection for all 4-cycle air cooled engines. 5W-30 viscosity rating is a four-season formula appropriate for mowers or snow blowers. High purity synthetic base oils inhibit the formation of deposits, varnish and sludge. Improves cold starts and withstands extreme heat to minimize engine wear and reduce risk of premature engine failure. Low volatility of synthetic base oils allow for maximum lubrication intervals.