{"product_id":"honda-trx300-fourtrax-1999-oil-change-kit-gn4-10w-40-3-qt-with-oem-filter-crush-washer","title":"Honda TRX300 FourTrax 1999 Oil Change Kit — GN4 10W-40 (3 qt) with OEM Filter \u0026 Crush Washer","description":"\u003cb\u003eComplete oil change kit for 1999 Honda TRX300 FourTrax 300 featuring 3 quarts of Honda GN4 10W-40 and a genuine OEM oil filter with crush washer.\u003c\/b\u003e\n\n\u003cp\u003eThis kit supplies the exact oils and parts matched to Honda's specifications so you can perform a clean, reliable fluid service on your 1999 TRX300 FourTrax 300. Honda GN4 10W-40 was engineered for motorcycle and ATV wet-clutch applications, blending high-quality base stocks with a motorcycle-specific additive package to protect gears, bearings and clutch components under load.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose GN4 10W-40 for the TRX300?\u003c\/h3\u003e\n\u003cp\u003eGN4 oil is a Honda-developed formulation intended for 4-stroke motorcycle and ATV engines where transmission and engine oil are shared. Its chemistry focuses on shear stability, consistent viscosity, and keeping internal components clean during varied riding conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eViscosity: 10W-40 to cover a wide temperature range for reliable cold starts and hot running.\u003c\/li\u003e\n  \u003cli\u003eShear resistance: Preserves viscosity under heavy mechanical load.\u003c\/li\u003e\n  \u003cli\u003eCompatibility: Safe for wet clutches and gearbox components in integrated systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly is included in this oil change kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit bundles the essential consumables needed for a standard oil service on the TRX300: three quarts of GN4 10W-40 motor oil, one genuine Honda OEM oil filter, and a crush washer for the drain bolt. That quantity matches Honda's specified oil capacity, allowing proper refill without shortfall.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3 quarts Honda GN4 10W-40 motor oil (factory formulation).\u003c\/li\u003e\n  \u003cli\u003e1 genuine Honda OEM oil filter engineered to Honda tolerances.\u003c\/li\u003e\n  \u003cli\u003e1 crush washer for a leak-free drain plug seal.\u003c\/li\u003e\n  \u003cli\u003eOil capacity guidance: 2.8 quarts for full service (kit provides slight extra).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will this kit affect maintenance and reliability?\u003c\/h3\u003e\n\u003cp\u003eUsing factory-formulated oil and an OEM filter helps maintain consistent lubrication, reduce wear, and support gearbox and clutch operation in the FourTrax's shared-sump configuration. Regular oil changes with correct parts help preserve engine tolerances and can prevent buildup that reduces performance over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCleaner internals: additive package helps reduce deposits and sludge.\u003c\/li\u003e\n  \u003cli\u003eOptimal protection: correct viscosity and shear stability for bearing protection.\u003c\/li\u003e\n  \u003cli\u003eProper sealing: OEM filter and crush washer reduce the chance of leaks post-service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I perform the oil change on a 1999 TRX300?\u003c\/h3\u003e\n\u003cp\u003eBasic service requires draining the old oil, replacing the filter, installing a new crush washer on the drain plug, and refilling to the specified capacity. Follow torque specs and run the engine briefly to circulate oil, then recheck oil level when warm on level ground.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDrain oil completely, replace crush washer on drain plug.\u003c\/li\u003e\n  \u003cli\u003eRemove and replace oil filter with OEM unit; lubricate filter gasket lightly.\u003c\/li\u003e\n  \u003cli\u003eRefill with GN4 10W-40 to ~2.8 quarts, check level after warm-up.\u003c\/li\u003e\n  \u003cli\u003eDispose of used oil and filter responsibly per local regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is intended for owners and technicians servicing a 1999 Honda TRX300 FourTrax 300 who want factory-spec fluids and parts in a single purchase. It suits DIY mechanics, fleet maintainers, and anyone replacing the oil and filter during routine maintenance to preserve performance and longevity.\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 safe for the TRX300 wet clutch?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Honda GN4 10W-40 is formulated for motorcycle\/ATV shared-sump wet-clutch systems and is compatible with the TRX300's clutch and gearbox.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much oil does the 1999 TRX300 hold?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The TRX300 holds approximately 2.8 quarts; this kit includes 3 quarts to provide the correct refill amount plus a small allowance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Honda","offers":[{"title":"Default Title","offer_id":48083975930014,"sku":"B00ATTQEJI","price":67.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/honda-trx300-front-packaging.jpg?v=1785841931","url":"https:\/\/northtrailauto.ca\/products\/honda-trx300-fourtrax-1999-oil-change-kit-gn4-10w-40-3-qt-with-oem-filter-crush-washer","provider":"North Trail Auto","version":"1.0","type":"link"}