ECHO® PowerBlend® Gold 6450050G 50 Gal Oil Mix 4-1 gal Containers per Case - ECHO PowerBlend® Gold is a semi-synthetic blend 2-stroke engine oil that mixes at a 50:1 ratio with 89 octane or higher gasoline. The oil formula includes detergents and a fuel stabilizer to maintain fuel quality, while the detergent assists in cleaner burning fuel and reliable performance. Both additives help to maintain a cleaner engine that helps to minimize exhaust-port blockages while protecting other vital engine components from wear and corrosion. A low smoke emissions formula offers improved environmental impacts on the user and surrounding environment.