Pennzoil   4949 High Viscosity Lower Unit Gear Lube, 1 Quart, (Pack of 12) High viscosity conventional oil for outboard and stern drives Helps protect against rust and corrosion Offers maximum lubrication and gear protection Contains extreme pressure agents to protect against shock and wear Contains foam inhibitors to protect against oil aeration High viscosity conventional oil for outboard and stern drives Oil weight: 80W-90 Offers maximum lubrication and gear protection Contains extreme pressure agents to protect against shock and wear Contains foam inhibitors to protect against oil aeration