1L WestWay Gear Oil Change Kit with Filling Pump for Yamaha Outboard SAE90

WESTWAY OILS 1L WestWay Gear Oil Change Kit SAE 90 Marine Grade | Universal Filling Pump Included The WestWay 1L Gear Oil Change Kit provides a complete solution for maintaining your marine outboard or sterndrive lower unit. This comprehensive kit includes 1 Litre of high-quality WestWay SAE 90 GL-4 Marine Gear Oil and a versatile universal filling pump, designed to simplify routine gear oil changes. Formulated to meet the demanding requirements of marine environments, the WestWay gear oil offers robust protection against wear, corrosion, and rust, ensuring the longevity and smooth operation of your gearbox. Its API GL-4 rating confirms it is safe for gear cases containing yellow metals, commonly found in many marine transmissions. IMPORTANT NOTE: This kit includes an M8 adapter specifically for Yamaha outboards, alongside M10 and 3/8" adapters for broad compatibility with other major marine engine brands. Always consult your engine's service manual for exact oil specifications and capacities. Key Features ▶ Extreme Pressure Protection: Guards gears against wear under severe loads. ▶ Corrosion & Rust Resistance: Advanced additives protect against saltwater damage. ▶ Low Foaming Formula: Maintains lubrication integrity at high RPMs. ▶ Yellow Metal Safe (API GL-4): Non-corrosive to brass/bronze components. ▶ Universal Filling Pump: Facilitates clean and easy oil changes. ▶ Multi-Fit Adapters: Includes M8, M10, and 3/8" fittings for broad compatibility. Technical Specifications Volume: 1 Litre (approx. 1.06 US qt) Viscosity: SAE 90 API Rating: GL-4 (Yellow Metal Safe) Oil Type: Premium Mineral EP Included Adapters: M8, M10, 3/8" Compatibility & Fitment Guide Application Models Adapter Required Yamaha Outboard Most 2-Stroke & 4-Stroke (e.g., F2.5 - F350) M8 (Included) Mercury / Mariner US Origin Models 3/8"-16 (Included) Suzuki / Tohatsu Standard Outboards M10 / M8 (Included) Honda Most Models M8 (Included) OEM Cross Reference Yamalube Part Numbers ACC-GEARL-UB-QT, ACC-PUMP0-00-QT, 90430-08003-00 Quicksilver / Mercury 92-858064K01, 8M0072133 Sierra Marine 18-9600-2, 18-9779 (Pump) Built-In Protection Functions The WestWay Marine Gear Oil is engineered with a robust additive package to provide essential protection for your outboard or sterndrive. It offers excellent extreme pressure (EP) protection to safeguard gears under high loads and speeds. The formula also includes high levels of rust and corrosion inhibitors, crucial for preventing damage from saltwater exposure and maintaining the integrity of internal components. Its GL-4 rating ensures it is safe for use with yellow metals, preventing corrosive wear on critical parts like brass or bronze synchronizers. Common Questions Is this oil safe for my 4-stroke Yamaha gearbox? Yes. This SAE 90 GL-4 mineral oil is specifically designed for marine outboard lower units, providing high-load protection whether you have a 2-stroke or 4-stroke engine. Will the pump fit the 1L WestWay bottle? Absolutely. The pump is designed to screw directly onto standard 1L (UK) and 946ml (US Quart) oil bottles for a leak-proof connection during the transfer process. Which adapter should I use for my Yamaha? You should use the 8mm (M8) adapter provided in the kit. It fits the majority of Yamaha outboard drain/fill plugs. Installation Notes Changing your outboard's gear oil is a routine maintenance task. Always ensure the engine is trimmed vertically for proper draining and filling. Remove both the drain and vent plugs to allow the old oil to drain completely. Use the provided pump and appropriate adapter to fill the lower unit from the bottom drain hole until new oil begins to flow out of the top vent hole. Replace the vent plug first, then the drain plug. Always use new drain plug washers (not included in this kit) to prevent leaks. Before You Buy Before purchasing, verify the specific gear oil requirements for your marine engine by consulting your owner's service manual. Pay close attention to the recommended viscosity (e.g., SAE 90 or 80W-90) and API classification (e.g., GL-4). While this kit offers broad compatibility, always confirm the correct adapter size for your drain/fill plugs. For larger V6 or V8 engines, a single 1L bottle may not be sufficient, and additional oil may be required. Please verify all specifications and compatibility with your equipment's manufacturer guidelines before purchase. Product specifications are subject to change without notice.