Key Insights• The Chinese transmission fluids market is undergoing a profound structural transformation, driven by the rapid electrification of the automotive sector and the transition from traditional "passive supporting" to "active enabling" roles. In 2025, the market size is estimated to reach RMB 23.28 billion (approximately USD 3.2 billion), growing at 11.4% year-on-year.• Domestic brands achieved a historic milestone in 2025, surpassing import brands with 58% of terminal sales for the first time, as localization rates jumped from below 30% in 2020 to 45% in 2025.• The market is characterized by a dual-track structure: traditional internal combustion engine vehicle fluids are declining, while electric drive oils, reducer oils, and energy storage liquid-cooling fluids are experiencing rapid demand growth. China's NEV fleet surpassed 40 million vehicles in 2025.Market Outlook• According to the research report, "China Transmission Fluid Market Outlook, 2031," published by Actual Market Research Research, the China Transmission Fluid Market is anticipated to add to more than USD 842.83 Million by 2026–31.• The Chinese transmission fluids market is evolving from volume-driven to value driven growth, with three core trends reshaping the industry, low-viscosity formulations becoming standard, extended drain intervals (exceeding 150,000 kilometers) becoming mainstream, and supply chain restructuring accelerating domestic substitution.• The NEV segment is the primary growth engine. Dedicated fluids for hybrid vehicles and electric vehicle reducers are experiencing explosive demand, with NEV-specific fluids now accounting for 17% of the total transmission fluid market.• Synthetic and fully synthetic transmission fluids are gaining significant traction, driven by tightening fuel economy and emissions regulations. Premium synthetic and semi synthetic grades are forecast to capture over 55–60% of market value by 2035, up from an estimated 40–45%.• The automotive aftermarket in China presents both opportunities and challenges. While the cumulative aftermarket output value declined by 5% year-on-year in H1 2025, gear oil sales showed slight growth of 1-2%, indicating resilient demand for transmission-related maintenance. Policies• 2025 marked a pivotal year for lubricant regulations in China, with the government intensifying efforts to phase out low-end capacity and drive product upgrades through multiple new national standards (GB standards).• Gasoline engine oil standard GB 11121-2025, issued on June 30, 2025, introduced SP/GF-6 series requirements, low-viscosity mandates, and LSPI (Low-Speed Pre-Ignition) protection.

Diesel engine oil standard GB 11122-2025 introduced D1 independent high-end specifications and low SAPS requirements, fully adapted to China VI emission standards.• Coolant standards were significantly upgraded: GB 29743.2-2025 "Electric Vehicle Coolant" (issued March 28, 2025, effective October 1, 2025) mandates electrical conductivity ≤100 μS/cm to high-voltage battery systems. GB 29743.3-2025 "Fuel Cell Coolant" (issued August 29, 2025, effective March 1, 2026) strengthens insulation and corrosion protection for stack thermal management.• The Ministry of Industry and Information Technology and the Ministry of Ecology and Environment have set guidelines for transmission fluid formulation and use, emphasizing high performance and reduced environmental impact. Regulations ensure transmission fluids meet stringent quality and safety standards while promoting more sustainable and efficient products.Transmission Fluid Adoption & Industry Impact• The Chinese transmission fluids market is primarily driven by the country's massive automotive sector, with vehicle production and sales sustaining demand. Transmission fluids are essential for the proper functioning of both manual and automatic transmissions, making them crucial for vehicle performance and longevity.• Total transmission fluid sales volume is expected to reach 580,000 tons in 2025, with passenger vehicles contributing approximately 450,000 tons and commercial vehicles and specialty vehicles accounting for the remainder. Product均价 is RMB 31.5 per liter, up 2.5% year-on-year, reflecting the premiumization trend.• Technologies are increasing significantly: Low-viscosity and extended-life formulations are becoming standard requirements. Additive technology has advanced considerably, with friction coefficient control and oxidation resistance exceeding 1,000 hours now standard.• The commercial vehicle segment remains a key demand driver, with transmission and gear oils representing a significant product category.

Heavy-duty transmission fluids are increasingly adopting synthetic formulations to meet stringent operational requirements.• Challenges facing the market include the need for continuous innovation in fluid formulations to meet advanced transmission system requirements, environmental regulations addressing fluid disposal, intense competition from both domestic and international players, and fluctuating raw material prices.Segment AnalysisChina Transmission Fluid Market By Type• Manual Transmission Fluid continues to be used in entry-level passenger cars, commercial vans, and medium duty trucks across China. Average replacement intervals range from 40,000 to 70,000 miles, with service fill volumes between 2 and 4 quarts. High quality MTF products support compatibility with over 150 manual transmission models, while lubricant durability typically extends to 6 years before scheduled replacement.• Dual-Clutch Transmission Fluid is extensively used in China due to the widespread adoption of DCT equipped domestic and international passenger vehicles. Standard replacement intervals range from 40,000 to 60,000 miles, with service fill volumes of 5 to 8 quarts. DCTF formulations are approved for more than 70 dual clutch transmission platforms, and complete servicing generally requires 2 to 3 hours in specialized service centers.• Continuously Variable Transmission Fluid is commonly used in compact sedans, hybrid vehicles, and crossover SUVs throughout China. Recommended replacement intervals range from 40,000 to 60,000 miles, with service fill volumes between 4 and 7 quarts.

Modern CVTF products are compatible with over 80 CVT transmission models, while lubricant service life generally reaches 5 to 6 years under standard driving conditions. China Transmission Fluid Market By Base Oil• Mineral-based transmission fluids remain widely used in older passenger vehicles, commercial fleets, and rural transportation applications across China. Typical service life ranges from 30,000 to 45,000 miles, with stable operating performance between -20°C and 120°C. These lubricants generally require replacement every 3 to 5 years and are commonly selected for conventional transmission systems requiring economical maintenance.• Synthetic transmission fluids based on PAO and ester technologies are increasingly adopted in premium passenger vehicles and electric-hybrid applications across China. These fluids provide service intervals ranging from 90,000 to 140,000 miles, while maintaining thermal stability across operating temperatures from -45°C to 180°C. Advanced formulations offer lubricant service life exceeding 8 years and are approved under more than 180 OEM transmission specifications.• Semi-synthetic transmission fluids are widely used in mid-range passenger vehicles and commercial fleets throughout China. Average drain intervals range from 60,000 to 90,000 miles, while enhanced oxidation resistance extends lubricant life by approximately 30 to 35% compared with conventional mineral fluids.

These formulations maintain reliable performance across operating temperatures between -30°C and 150°C. China Transmission Fluid Market By Sales Channel• Original Equipment transmission fluids are supplied through vehicle manufacturers' authorized dealerships and service centers across China. Typical replacement intervals range from 60,000 to 100,000 miles, following OEM maintenance schedules. OE lubricants comply with more than 120 manufacturer-specific transmission standards, ensuring compatibility with automatic, dual clutch, and continuously variable transmission systems.• The aftermarket dominates transmission fluid replacement for vehicles operating beyond their warranty period in China. Independent workshops typically perform transmission servicing every 40,000 to 80,000 miles, with monthly lubricant procurement ranging from 300 to 1,500 liters per workshop depending on service volume. Most transmission fluid replacement procedures are completed within 1 to 2 hours using dedicated flushing and filling equipment. China Transmission Fluid Market By Application• Passenger and commercial vehicles account for the largest volume of transmission fluid usage in China due to the country's extensive vehicle fleet and logistics industry. Average replacement intervals range from 50,000 to 90,000 miles, with service fill volumes between 4 and 10 quarts per vehicle.

Commercial fleet operators generally perform preventive transmission maintenance every 12 to 18 months, helping improve transmission durability and minimize operational downtime.• Off-road vehicles used in mining, construction, agriculture, and infrastructure development require transmission fluid replacement every 500 to 1,000 operating hours. Average lubricant consumption ranges from 15 to 45 quarts per service depending on equipment size and transmission capacity. Preventive maintenance schedules generally include transmission inspections every 250 to 300 operating hours, extending drivetrain life and improving equipment availability under heavy duty operating conditions.Considered in this report• Historic Year: 2020• Base year: 2025• Estimated year: 2026• Forecast year: 2031Aspects covered in this report• Transmission Fluid Market with its value and forecast along with its segments• Various drivers and challenges• On-going trends and developments• Top profiled companies• Strategic recommendationBy Type• Automatic Transmission Fluid (ATF)• Manual Transmission Fluid (MTF)• Dual-Clutch Transmission Fluid (DCTF)• Continuously Variable Transmission Fluid (CVTF)By Base Oil• Mineral• Synthetic (PAO, esters)• Semi-syntheticBy Sales Channel• Original Equipment (OE)• AftermarketBy Application• Passenger and Commercial Vehicles• Off-Road Vehicles.