Yamaha Ultramatic Grease - 4.5 oz Tube. OEM Marine Lubricant Water-Resistant Formula Perfect for Outboard Care. Description:Specially engineered for Yamaha marine equipment, Ultramatic Grease delivers reliable lubrication and corrosion protection in the harshest boating environments. Its advanced water-resistant formula ensures that critical outboard components remain protected from saltwater intrusion, friction, and wear.. Sized at 4.5 ounces, this tube offers a convenient, portable option for