Quicksilver oils and lubricants by mail order. Quicksilver oils and lubricants should always be used in any Mariner and Mercury outboard or Mercruiser inboard. Quicksilver oils are formulated to perform and protect your outboard or inboard and non OEM oil should never be used.
Genuine Quicksilver Oils and Lubricants are made to exacting standards to withstand the harsh salt water environment in which marine engines operate. They are not expensive and all Quicksilver products perform well in harsh salt water environments. Why risk you or your family or your engine out at sea by using non OEM parts?