{"product_id":"4into1-honda-gn4-10w-40-motorcycle-oil-1-qt-4-stroke-oem-formula-wet-clutch-safe","title":"4into1 Honda GN4 10W-40 Motorcycle Oil 1 qt - 4-Stroke OEM Formula, Wet-Clutch Safe","description":"\u003cp\u003e\u003cstrong\u003eGenuine Honda GN4 10W-40 SJ is a factory-formulated 4-stroke motorcycle oil designed for Hondas, including vintage bikes with wet clutches.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis oil is the genuine Pro Honda GN4 formula first developed to meet motorcycles' unique lubrication needs. Packaged in a 32 fl. oz. (1 quart \/ 946 ml) container and sold under Honda OEM part number 08C35-A141M01, this 10W-40 SJ grade combines high-quality base stocks with an additive package tailored for motorcycle and ATV engines. GN4 has been refined through ongoing testing to improve shear resistance, viscosity stability and engine cleanliness for a wide range of street and light-touring machines.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes GN4 10W-40 different from regular engine oils?\u003c\/h3\u003e\n\u003cp\u003eGN4 is formulated specifically for motorcycles, which often share oil between the engine and the transmission or have wet-clutch systems. Its additive balance preserves clutch grip while protecting gears and bearings under motorcycle-specific loads and RPM ranges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMotorcycle-focused additive package for wet-clutch compatibility.\u003c\/li\u003e\n  \u003cli\u003eViscosity rated 10W-40 to perform across a broad temperature range.\u003c\/li\u003e\n  \u003cli\u003eManufactured to Honda factory specifications for OEM-fit performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil support older Honda and vintage bikes?\u003c\/h3\u003e\n\u003cp\u003eGN4's formula was developed with long-term durability in mind, making it suitable for vintage Hondas that rely on traditional wet-clutch and gearbox designs. The oil's shear resistance and stability help preserve clearances and maintain consistent protection even in older engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProven compatibility with classic Honda wet-clutch setups.\u003c\/li\u003e\n  \u003cli\u003eImproved viscosity stability helps reduce thinning under high stress.\u003c\/li\u003e\n  \u003cli\u003eHelps limit deposits and maintain cleanliness in older engine internals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I use 10W-40 GN4 in my motorcycle?\u003c\/h3\u003e\n\u003cp\u003eChoose 10W-40 GN4 when your owner's manual lists 10W-40 or a similar viscosity for your riding conditions, or when you want a versatile oil that handles temperate climates and moderate engine loads. It is a practical choice for everyday street riding, light touring, and classic Honda models.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIdeal for temperate climates and mixed city\/highway use.\u003c\/li\u003e\n  \u003cli\u003eRecommended for bikes specifying 10W-40 or GN4-compatible oils.\u003c\/li\u003e\n  \u003cli\u003eGood for routine oil changes and seasonal maintenance on Hondas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I verify this is the correct OEM oil for my Honda?\u003c\/h3\u003e\n\u003cp\u003eConfirm compatibility by checking your motorcycle's owner's manual or the parts listing for the OEM part number. This bottle carries Honda part number 08C35-A141M01 and is the factory GN4 10W-40 SJ formulation intended for use where Honda specifies GN4 or equivalent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLook for Honda OEM part number 08C35-A141M01 on the label.\u003c\/li\u003e\n  \u003cli\u003eCross-check your owner's manual viscosity and API SJ recommendations.\u003c\/li\u003e\n  \u003cli\u003eWhen in doubt, consult a Honda dealer or qualified mechanic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Riders who own Hondas or compatible motorcycles—especially those with wet-clutch gearboxes or vintage machines—will benefit from this genuine factory oil. Mechanics, restorers, and owners seeking an OEM-approved 1-quart supply for regular servicing will appreciate GN4's heritage, clutch compatibility, and balanced protection across engine and transmission components.\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: Is GN4 10W-40 compatible with wet-clutch motorcycles?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. GN4 is formulated for motorcycle use and compatible with wet-clutch systems, maintaining clutch grip while protecting gears.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the OEM part number and container size?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This is Honda OEM part 08C35-A141M01 in a 32 fl. oz. (1 quart \/ 946 ml) bottle.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"4into1","offers":[{"title":"Default Title","offer_id":55167217140055,"sku":"B077XMRJBN","price":32.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/4into1-honda-gn4-front-label.jpg?v=1790378783","url":"https:\/\/britishgarage.co.uk\/products\/4into1-honda-gn4-10w-40-motorcycle-oil-1-qt-4-stroke-oem-formula-wet-clutch-safe","provider":"British Garage","version":"1.0","type":"link"}