{"product_id":"honda-marine-80w-90-gear-case-oil-quart-semi-synthetic-lower-unit-lubricant-adhesive-protection","title":"Honda Marine 80W-90 Gear Case Oil Quart — Semi-Synthetic Lower Unit Lubricant, Adhesive Protection","description":"\u003cp\u003e\u003cstrong\u003eHonda Marine 80W-90 Gear Case Oil (Quart) is a semi-synthetic lower unit lubricant formulated to cling to gears and bearings, protect across wide temperature ranges, and extend the life of outboard gear cases.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned specifically for Honda outboard lower units but suitable for many marine gear cases, this 32 oz. 80W-90 semi-synthetic oil balances shear stability with surface adhesion to reduce wear under load. Its formulation helps maintain a protective film on gear teeth and bearings so components run smoothly in varied water and ambient temperature conditions. Packaged in an easy-pour quart bottle, it’s sized for routine maintenance or on-the-water top-ups.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this oil protect a lower unit under different temperatures?\u003c\/h3\u003e\n\n\u003cp\u003eThe 80W-90 viscosity range gives dependable cold-start flow while retaining body at higher engine and gearbox temperatures. The semi-synthetic base resists thinning under heat and resists hardening in cooler conditions, preserving a protective film where gears mesh.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e80W cold-start characteristics for easier lubrication at lower temps\u003c\/li\u003e\n  \u003cli\u003e90 rating at operating temperatures for sustained film strength\u003c\/li\u003e\n  \u003cli\u003eSemi-synthetic base improves viscosity stability versus conventional oils\u003c\/li\u003e\n  \u003cli\u003eAdhesive additives help the oil cling to gears and bearings for continuous protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this oil improve gear life and reduce wear?\u003c\/h3\u003e\n\n\u003cp\u003eYes — by maintaining a consistent lubricating film and reducing metal-to-metal contact, the formulation helps slow wear on bearings and gear teeth. It’s engineered to minimize surface fatigue and scuffing under typical marine loads when used as part of regular maintenance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eReduces friction where gear teeth engage under load\u003c\/li\u003e\n  \u003cli\u003eAdditives support bearing protection during heavy or repetitive use\u003c\/li\u003e\n  \u003cli\u003eHelps prevent premature gear-case failures when changed at recommended intervals\u003c\/li\u003e\n  \u003cli\u003eSuitable for preventive maintenance schedules on outboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I use and store the quart bottle for best results?\u003c\/h3\u003e\n\n\u003cp\u003eThe 32 oz. bottle is convenient for filling or topping off most outboard lower units. Use a clean pump or funnel when transferring to avoid contamination, and store the bottle sealed in a cool, dry place away from direct sunlight to preserve additive performance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePour with a nozzle, pump, or funnel to keep contaminants out of the gear case\u003c\/li\u003e\n  \u003cli\u003eKeep the cap tightly closed between uses to avoid moisture ingress\u003c\/li\u003e\n  \u003cli\u003eStore upright in a shaded, temperature-stable location\u003c\/li\u003e\n  \u003cli\u003eFollow manufacturer change intervals and disposal guidelines for used oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this oil compatible with Honda gear cases and other marine lower units?\u003c\/h3\u003e\n\n\u003cp\u003eThis 80W-90 semi-synthetic oil is formulated for Honda Marine outboard lower units and is commonly compatible with many other marine gear cases that specify SAE 80W-90 gear oil. Always verify your outboard’s owner manual for recommended viscosities and specifications before switching lubricants.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMeets common SAE 80W-90 gear oil requirements used in many lower units\u003c\/li\u003e\n  \u003cli\u003eRecommended for Honda Marine lower units per product labeling\u003c\/li\u003e\n  \u003cli\u003eConfirm OEM specs for non-Honda outboards before use\u003c\/li\u003e\n  \u003cli\u003eNot a transmission fluid substitute unless specified by the manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boat owners and marine technicians who perform routine lower-unit maintenance and need a reliable, semi-synthetic 80W-90 gear oil in a convenient 32 oz. size. It’s ideal for sailors and anglers running Honda outboards or anyone seeking a stable, adhesive lubricant to protect gear cases across a range of temperatures and operating conditions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much does one quart fill on common outboards?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One quart (32 oz.) generally fills smaller lower units or serves as a top-up; check your outboard manual for exact capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I mix this semi-synthetic oil with conventional gear oil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Mixing is possible but not ideal; for best protection use the same oil type and change interval recommended by your manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Honda","offers":[{"title":"Default Title","offer_id":48084395327646,"sku":"B006TZBRS4","price":32.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/honda-80w90-quart-front-label.jpg?v=1785853526","url":"https:\/\/northtrailauto.ca\/products\/honda-marine-80w-90-gear-case-oil-quart-semi-synthetic-lower-unit-lubricant-adhesive-protection","provider":"North Trail Auto","version":"1.0","type":"link"}