STAR BRITE Hypoid 90W Lower Unit Gear Lube is engineered for exceptional performance in marine environments, catering to the needs of outboard motors and stern drives with mechanical shift mechanisms. This premium lubricant is designed for API GL-5 service, ensuring compatibility with a range of popular brands including Mercury, Mercruiser, Johnson, Evinrude, OMC, Force, Mariner, Nissan, Suzuki, Yamaha, and Volvo. Formulated with advanced anti-wear additives, rust, and corrosion inhibitors, it guarantees maximum protection and longevity for your marine equipment. Not only does it exceed all engine manufacturer specifications, but it also adheres to stringent standards such as API MT-1, GL-5, SAE J2360, and MIL-L-2105E, ensuring it won't void manufacturers' warranties. The application process is streamlined for user convenience, with recommended usage of the Star brite Lower Unit Quart Pump (#27400) for efficient filling. Environmentally conscious, STAR BRITE emphasizes the importance of responsible disposal of used oil, aligning with Federal and local regulations. This gear lube embodies the perfect blend of quality, performance, and reliability, making it an ideal choice for marine enthusiasts seeking superior lubrication for their equipment.