{"product_id":"motul-gear-300-75w90-synthetic-gear-oil-1l-ester-base-ep-protection","title":"Motul Gear 300 75W90 Synthetic Gear Oil 1L — Ester Base, EP Protection","description":"\u003cp\u003e\u003cstrong\u003eMotul Gear 300 75W90 is a 100% synthetic, ester-based gear oil engineered to deliver extreme-pressure protection, durable unshearable film strength, and smooth shifting for high-performance manual transmissions and non-LSD differentials.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for racing and aggressive street use, this one-liter formulation combines high-temperature stability with excellent low-temperature fluidity. It meets API GL-4\/GL-5 performance levels and is designed to protect gears under heavy loads, resist viscosity loss from mechanical shear, and remain compatible with brass synchros and modern gearbox materials. Motul Gear 300 is intended where high torque, shock loads, and rapid cycling demand a robust lubricant that won’t thin out or create excessive gear noise.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Motul Gear 300 protect gears during track and racing use?\u003c\/h3\u003e\n\u003cp\u003eMotul Gear 300 contains extreme-pressure (EP) additives and an ester synthetic base that form a resilient lubricating film. This film resists wear, handles shock loads, and reduces the risk of micro-welding on hypoid gear teeth under severe conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAPI GL-4 \/ GL-5 rated EP formulation for heavy-load protection\u003c\/li\u003e\n  \u003cli\u003eUnshearable film confirmed by KRL 20-hour shear testing\u003c\/li\u003e\n  \u003cli\u003eMaintains SAE 90 viscosity at high temperatures for consistent film strength\u003c\/li\u003e\n  \u003cli\u003eReduces gear tooth wear and improves component longevity under stress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it improve shifting and performance in cold weather?\u003c\/h3\u003e\n\u003cp\u003eYes — the 75W rating provides good low-temperature flow to shorten shift times and reduce resistance on cold starts. That means easier gear engagement for synchronized gearboxes and smoother driver control in cooler climates.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExcellent low-temperature fluidity for quicker gear selection\u003c\/li\u003e\n  \u003cli\u003eSupports synchronized and non-synchronized transmissions\u003c\/li\u003e\n  \u003cli\u003eHelps prevent shift-related wear during cold operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs Motul Gear 300 compatible with my gearbox materials and limited-slip systems?\u003c\/h3\u003e\n\u003cp\u003eMotul Gear 300 is formulated to be safe for yellow metals such as brass synchros and for modern gearbox materials, with additives to limit corrosion, foaming, and emulsification. However, it is specifically recommended for non-LSD differentials; do not use it where limited-slip friction additives are required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with brass synchros and common gearbox alloys\u003c\/li\u003e\n  \u003cli\u003eAnti-corrosion and anti-foam properties for long-term reliability\u003c\/li\u003e\n  \u003cli\u003eNot intended as a limited-slip differential fluid—avoid LSD applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this oil handle long-term durability and high-temperature stability?\u003c\/h3\u003e\n\u003cp\u003eThe synthetic ester base and robust additive package resist thermal breakdown and mechanical shearing, preserving viscosity and protective film thickness during extended high-load runs. This stability reduces maintenance frequency and helps control gear noise by keeping film strength consistent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-temp stability keeps oil within SAE 90 viscosity range under heat\u003c\/li\u003e\n  \u003cli\u003eResists mechanical shear for predictable performance over time\u003c\/li\u003e\n  \u003cli\u003eHelps minimize transmission noise during heavy or sustained use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Motul Gear 300 75W90 is aimed at racers, performance drivers, and enthusiasts who run manual transmissions, transfer cases, or hypoid differentials (non-LSD) under high loads or aggressive conditions. Select this oil if you need a fully synthetic, unshearable gear lubricant that retains film strength at high temperatures, improves cold shifting, and is compatible with brass synchros and modern gearbox materials. If your vehicle requires a friction-modified LSD fluid, choose a product explicitly labeled for limited-slip systems instead.\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: Can I use Motul Gear 300 in a limited-slip differential?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Motul Gear 300 is formulated for non-LSD differentials; use a dedicated LSD fluid when limited-slip friction additives are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this oil safe for brass synchros and modern gearbox materials?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The formula is compatible with yellow metals and includes anti-corrosion additives for gearbox material safety.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Motul","offers":[{"title":"Default Title","offer_id":55166415438167,"sku":"B005UGKJCS","price":37.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/motul-gear-300-front-packaging.jpg?v=1790368157","url":"https:\/\/britishgarage.co.uk\/products\/motul-gear-300-75w90-synthetic-gear-oil-1l-ester-base-ep-protection","provider":"British Garage","version":"1.0","type":"link"}