★ AMECA Registered · #230611
Sinolook DOT 3 Brake Fluid
Synthetic glycol-ether hydraulic fluid — the world's most widely used grade, for passenger cars, motorcycles, scooters and hydraulic clutch systems.
- Dry boiling point 222 °C · Wet boiling point 151 °C
- Certified to FMVSS 116, ISO 4925 Class 3, SAE J1703, GB HZY3
- Independently tested at ABIC Testing Laboratories (USA)
- Suitable for brake and clutch hydraulic systems — bulk, drum, IBC, retail
222 °C
Dry Boiling Point
151 °C
Wet Boiling Point
#230611
AMECA Notification
25 yrs
Manufacturing Experience
Product Overview
The most widely used brake fluid grade worldwide
DOT 3 brake fluid has been the global default for decades. It is the specified fluid for the vast majority of older passenger cars, virtually all commuter motorcycles and scooters, and most hydraulic clutch systems. Sinolook's formulation is a synthetic glycol-ether blend engineered for consistent pedal feel, full seal compatibility, and stable performance across the full service interval.
Manufactured at our IATF 16949:2016 certified plant in Nan'an, Fujian since 2000, and independently verified by ABIC Testing Laboratories, Inc. in the United States, Sinolook DOT 3 brake fluid meets all four major international standards: FMVSS 116, ISO 4925 Class 3, SAE J1703, and GB 12981 HZY3 — with AMECA notification number #230611.
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Universal compatibility
The default specification for most pre-2006 vehicles globally. Compatible with all DOT 3 / DOT 4 hydraulic brake and clutch systems using SBR or EPDM seal materials.
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Margin above FMVSS minimum
Typical dry ERBP of 222 °C — 17 °C above the FMVSS 116 minimum of 205 °C. Stable wet ERBP of 151 °C exceeds the 140 °C requirement.
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Seven-metal corrosion verified
Tested compatible with tinned iron, steel, cast iron, aluminium, brass, copper, and zinc per ISO 4925 §6.5 — well within the ±0.2 mg/cm² standard limit.
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Brake & clutch dual-use
Suitable for both braking and hydraulic clutch actuation — the single fluid covers two systems in most manual-transmission vehicles using DOT 3 specification.
Technical Specifications
Sinolook DOT 3 — typical production values
Enterprise typical values from current production batches. Every shipment is supplied with a Certificate of Analysis (COA) listing the batch-specific results. Independent ABIC test reports against FMVSS 116, ISO 4925, and SAE J1703 are available on request.
| Property | Test method | Typical value | ISO 4925 Class 3 min. |
|---|---|---|---|
| Appearance & Chemistry | |||
| Appearance | Visual | Clear, transparent | Free of suspended matter |
| pH value | ISO 4925 §6.3 | 8.00 | 7.0 – 11.5 |
| Boiling Point | |||
| Equilibrium reflux boiling point (Dry ERBP) | ISO 4925 §6.2 | 222 °C | ≥ 205 |
| Wet equilibrium reflux boiling point (Wet ERBP) | ISO 4925 §6.2.6 | 151 °C | ≥ 140 |
| Kinematic Viscosity | |||
| Viscosity at −40 °C | ISO 4925 §6.1 | 1,395 mm²/s | ≤ 1,500 |
| Viscosity at 100 °C | ISO 4925 §6.1 | 2.08 mm²/s | ≥ 1.5 |
| Corrosion (120 h @ 100 °C ± 2 °C, mg/cm²) | |||
| Tinned iron / Steel / Cast iron | ISO 4925 §6.5 | ±0.04 max | ±0.2 |
| Aluminium | ISO 4925 §6.5 | +0.01 | ±0.1 |
| Brass / Copper | ISO 4925 §6.5 | +0.05 / −0.06 | ±0.4 |
| Zinc | ISO 4925 §6.5 | −0.02 | ±0.4 |
| Rubber Compatibility (120 °C, 70 h) | |||
| SBR — hardness change (IRHD) | ISO 4925 §6.10 | −2.0 | ≤ −15 |
| SBR — volume increase | ISO 4925 §6.10 | 4.2% | 1 – 16% |
| EPDM — hardness change (IRHD) | ISO 4925 §6.10 | −3.2 | ≤ −15 |
| EPDM — volume increase | ISO 4925 §6.10 | 4.0% | 0 – 10% |
| Evaporation (100 °C, 168 h) | |||
| Evaporation loss | ISO 4925 §6.11 | 74.6% | ≤ 80% |
| Residue pour point | ISO 4925 §6.11 | < −5 °C | ≤ −5 °C |
Typical values from production batch (representative QC sample). Highlighted figures indicate margin above the ISO 4925 Class 3 minimum requirement. Complete test reports — including fluidity, water tolerance, oxidation, stroking, and effect on rubber cups — issued per shipment by ABIC Testing Laboratories.
Recommended Applications
Where Sinolook DOT 3 brake fluid is used
DOT 3 is the foundational brake fluid grade — covering an enormous installed base of older vehicles, plus the majority of two-wheelers and hydraulic clutch systems worldwide.
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Older passenger cars (pre-2006)
The default specification for most cars built before 2006, including many vehicles from major Asian, European and American manufacturers still in active service.
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Motorcycles & scooters
The universal choice for commuter motorcycles and scooters. Most two-wheeler manufacturers worldwide specify DOT 3 or DOT 4 — Sinolook DOT 3 covers the lower specification cleanly.
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Hydraulic clutch systems
Many manual-transmission vehicles use the same fluid for clutch actuation as for braking. Sinolook DOT 3 is suitable for any clutch reservoir marked DOT 3 or "brake and clutch fluid".
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Classic & vintage vehicles
Older classic cars with non-ABS brake systems typically require DOT 3. Compatible with the natural rubber and EPDM seals used in vintage hydraulic systems.
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Light commercial & fleet
Fleet maintenance for light delivery vans, taxis and shared-mobility vehicles where the original specification calls for DOT 3.
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Industrial & off-highway
Forklifts, agricultural equipment, small construction machinery with hydraulic brake systems specifying DOT 3 grade.
Note: Always check the brake fluid reservoir cap on the master cylinder for the manufacturer's specification. Never use a fluid grade lower than specified. Upgrading from DOT 3 to DOT 4 is safe and requires no system flush.
B2B Capability
Flexible packaging, OEM & global supply
As the highest-volume grade in the brake fluid family, Sinolook DOT 3 is supplied in every commercial format — from 250 ml retail bottles for the aftermarket through to flexitank and ISO tank for high-volume blenders.
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OEM & private label
Custom label design, custom bottle / drum colors, dedicated SKU codes. Artwork approval to first shipment in 25 – 35 days.
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Retail & bulk packaging
250 ml · 500 ml · 1 L retail bottles · 5 L, 20 L, 200 L drums · 1,000 L IBC totes · flexitank · ISO tank.
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Global logistics
Direct shipment ex Xiamen, Hong Kong or Singapore. FOB / CIF / DDP terms. UN 1992 / IMDG-compliant export packing.
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Documentation per shipment
Technical Data Sheet (TDS), Safety Data Sheet (SDS), Certificate of Analysis (COA), AMECA notification, certificate of origin and CIQ documents.
Learn More
Brake fluid resources
In-depth guides on brake fluid chemistry, standards, and service intervals — written by our technical team.
Comparison
DOT 3 vs DOT 4 Brake Fluid: Differences, Compatibility & Which to Use
Side-by-side comparison of boiling points, viscosity, and applications — plus the mixing and upgrade rules.
Technical
Brake Fluid Boiling Point: Dry vs Wet, Why It Matters
How the ERBP test works, why fluid absorbs moisture, and how brake fade actually happens.
Standards
Brake Fluid Standards: FMVSS 116, ISO 4925, SAE J1703 & GB 12981
A B2B reference on the four major brake fluid standards and how they map to OEM specifications.
Compatibility
Can You Mix Brake Fluids? DOT 3, 4, 5.1 & DOT 5 Compatibility
The real chemistry of mixing brake fluid grades — which combinations are safe, which destroy seals.
Service Guide
How to Change Brake Fluid: Step-by-Step Guide
Tools, procedure, common mistakes, and the bleed sequence to follow when flushing brake fluid.
Reference
Types of Brake Fluid Explained: DOT 3, 4, 4+, 5, 5.1, HZY6, Class 7
Every brake fluid grade compared — composition, boiling points, applications and selection chart.
FAQ
Frequently asked questions
What is DOT 3 brake fluid used for?
DOT 3 brake fluid is the most widely used hydraulic brake fluid worldwide. It is the standard fluid for older passenger cars, motorcycles, scooters, and hydraulic clutch systems where the vehicle manufacturer specifies DOT 3. Sinolook DOT 3 transmits pedal force to the brake calipers in disc and drum brake systems and is fully compatible with conventional rubber seals.
Can DOT 3 be used as a clutch fluid?
Yes. Hydraulic clutch systems in many manual-transmission vehicles use the same fluid as the brake system. If your vehicle's clutch reservoir is marked "DOT 3" or "brake and clutch fluid", Sinolook DOT 3 is the correct choice. Always check the reservoir cap or owner's manual for the exact specification.
What is the difference between DOT 3 and DOT 4?
DOT 4 has higher boiling points than DOT 3 (Sinolook DOT 4: 250 °C / 160 °C vs Sinolook DOT 3: 222 °C / 151 °C). Both are glycol-ether based and fully compatible — you can safely upgrade from DOT 3 to DOT 4 without flushing. Never downgrade. Older vehicles (typically pre-2006) usually specify DOT 3; modern vehicles with ABS or ESP usually specify DOT 4. Read our full DOT 3 vs DOT 4 comparison.
Can I mix Sinolook DOT 3 with other brake fluids?
Yes — within the glycol-ether family. Sinolook DOT 3 is fully compatible with DOT 3, DOT 4, DOT 4+ and DOT 5.1 brake fluids from any manufacturer meeting FMVSS 116 or ISO 4925. It must never be mixed with DOT 5 silicone brake fluid, which is chemically incompatible.
Is DOT 3 suitable for vehicles like Honda, Toyota or older passenger cars?
Yes — DOT 3 is the most common brake fluid specification for older passenger cars worldwide, including many Japanese, European and American makes built before 2006. Always check the brake fluid reservoir cap on the master cylinder for the exact specification. If the cap shows "DOT 3" or "DOT 3 / DOT 4", Sinolook DOT 3 is suitable.
What standards does Sinolook DOT 3 meet?
Sinolook DOT 3 is certified to four major international standards:
• US FMVSS 116 — AMECA notification #230611
• ISO 4925:2020 — Class 3
• SAE J1703
• GB 12981 HZY3 — China national standard
Independent test reports are issued by ABIC Testing Laboratories, Inc. in Fairfield, New Jersey, USA. Manufacturing operates under IATF 16949:2016 and ISO 9001:2015 quality systems.
• US FMVSS 116 — AMECA notification #230611
• ISO 4925:2020 — Class 3
• SAE J1703
• GB 12981 HZY3 — China national standard
Independent test reports are issued by ABIC Testing Laboratories, Inc. in Fairfield, New Jersey, USA. Manufacturing operates under IATF 16949:2016 and ISO 9001:2015 quality systems.
What is the shelf life of unopened DOT 3?
Sealed Sinolook DOT 3 has a shelf life of 24 months from the production date when stored in original containers, away from direct sunlight, at 5 – 30 °C. Once opened, glycol-ether brake fluid begins absorbing atmospheric moisture (hygroscopy), which lowers its boiling point — opened containers should be used within 12 months.
What is the minimum order quantity for Sinolook DOT 3?
Standard MOQ is 1 × 20'FCL, approximately 18–20 metric tons depending on packaging configuration. Smaller trial orders may be accepted for OEM and private-label customers. Bulk shipment in flexitank or ISO tank is available for orders 20 tons and above.
Does Sinolook offer OEM and private-label DOT 3?
Yes. Sinolook offers full OEM and private-label service: custom label design, custom bottle and drum colors, custom packaging sizes from 250 ml to 200 L, and bulk supply. Lead time is typically 25 – 35 days from artwork approval. Contact sales@sinolook.com with your label artwork and packaging requirement.
Source DOT 3 from a 25-year manufacturer
Tell us your packaging requirement, annual volume, and destination port. We'll respond within 24 hours with technical specs, pricing, and logistics options.
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📧 sales@sinolook.com
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