GAFLE

For global auto chemical importers, OEM brand owners and auto repair chains, mastering mainstream brake fluid standards is the core foundation of product procurement and quality control. The two most widely recognized global specifications are China’s GB12988 national standard and the US DOT standard formulated by the Department of Transportation. This article systematically compares their formulation basis, core technical indicators, applicable scenarios and mutual recognition rules.

Issued by the U.S. Department of Transportation, it is the most internationally circulated brake fluid standard, covering DOT 3, DOT 4, DOT 5.1 glycol-based fluid and DOT 5 silicone fluid. It is mandatory for all vehicles sold in North America, and most aftermarket distributors in Europe, Southeast Asia, South America and Africa take DOT indicators as the primary purchasing benchmark. The core test methods refer to SAE J1703 / SAE J1704.

GB12988-2012 Motor Vehicle Brake Fluid is the compulsory national standard for all brake fluid produced and sold in China, drafted by professional auto chemical manufacturers including GAFLE. It fully aligns with the core safety indicators of the DOT system, while adding localized test items adapting to China’s complex road conditions and temperature environments. All Chinese export brake fluid factories must pass GB12988 batch inspection before shipment.

3. Differences in Test Items & Inspection Rules

1. Corrosion Test: GB12988 adds a long-term metal corrosion simulation test for steel, cast iron, aluminum and copper parts, adapting to humid high-salt coastal areas; DOT only requires short-cycle corrosion verification.
2. Low-temperature Cycle Test: GB12988 simulates -40℃ to 70℃ alternating cold and heat cycles, targeting northern cold regions and tropical high-temperature markets; DOT low-temperature test is single fixed-point detection.
3. Batch Supervision: GB12988 mandates full batch testing before factory delivery with complete original laboratory records retained for 6 months; overseas DOT manufacturers mostly adopt sampling inspection.

4. Mutual Recognition & Global Application Guidance

1. Export to North America, Australia, Europe: Products meeting GB12988 Grade 4 / Grade 5 fully satisfy DOT4 / DOT5.1 market access requirements, and test reports can be used for customs clearance auxiliary materials.
2. Domestic Chinese market sales: Only brake fluid complying with GB12988 can be legally circulated; pure DOT-certified imported oil without GB inspection records cannot enter China’s aftermarket.
3. Cold-region markets (Russia, Northern Europe, Canada): Prioritize GB12988 Grade 5 / DOT5.1 products with -40℃ viscosity ≤900 mm²/s for stable winter braking.
4. High-temperature mountainous areas (South America, Southeast Asia): GB12988 Grade4 / DOT4 is the mainstream cost-effective choice for passenger cars and light trucks.

5. GAFLE Standard Compliance Advantage

Closing Summary