Priced as of May 19, 2026
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Prices may varyAbout this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate SDS data — they do not replace the SDS or substitute for a hazard assessment specific to your task.
CarCareTruth's Analysis
Last reviewed May 19, 2026
TL;DR Class 6 DOT 4 LV with TDS-documented 509°F dry / 338°F wet boiling points — +63°F and +27°F above the DOT 4 FMVSS 116 floors. DANGER signal word with H361d (suspected fetal harm) at mixture level — pregnant readers should hand off the job or wear chemical-splash goggles plus nitrile gloves.
What it is and how it performs
DOT 4 LV is the low-viscosity (ISO 4925 Class 6) variant of DOT 4, engineered for ABS/ESP modulators that need fast valve response in cold weather — BMW, MINI, Audi/VW, and certain Ford applications. The Pentosin TDS documents 509°F dry and 338°F wet, above the DOT 4 minimums of 446°F / 311°F. The +27°F wet margin is moderate, not category-leading, but holds meaningful headroom across a typical 2–3 year service interval. The dry BP clears the DOT 5.1 dry floor; the wet BP is 18°F below the 5.1 wet floor — correctly labeled DOT 4, not a 5.1 substitute.
Who should buy this — and who should skip it
Best for European-vehicle and Ford owners whose OEM service procedure calls out Class 6 / Low Viscosity DOT 4 — the reference matrix on the can matches BMW, MINI, Audi/VW, GM, and Saab numbers, and the bottle carries Ford WSS-M6C65-A2 and Motorcraft PM-20 approvals. Skip if your vehicle specifies only generic DOT 4 (commodity fluid is cheaper) or specifies DOT 5.1 by label. Not compatible with DOT 5 silicone fluid.
Safety and environmental impact
Signal word is DANGER. H318 (DIPA, 5–10%) means direct splash can cause permanent eye injury — chemical-splash goggles are warranted for caliper and pressure-bleed work, not just safety glasses. H361d (boric-acid-triester base, 75–100%) flags suspected harm to the unborn child; pregnant readers and anyone planning a pregnancy soon should hand off brake service or wear full splash PPE — the SDS does not specify a safe exposure window. SDS §15 states no Prop 65 chemicals are present. Brake fluid's mild sweet taste attracts pets and small children — store sealed and inaccessible. Spent fluid cannot go down a household drain; take it to a used-fluid collection site.
Frequently asked questions
Is Pentosin DOT 4 LV the same as DOT 5.1?▾
No. The product is certified DOT 4 (specifically ISO 4925 Class 6 / Low Viscosity). Its TDS-documented dry boiling point of 509°F technically exceeds the DOT 5.1 dry minimum of 500°F, but the wet boiling point of 338°F is 18°F below the DOT 5.1 wet minimum of 356°F — the fluid does not clear both spec floors and therefore cannot carry a DOT 5.1 label. DOT 5.1 and DOT 4 LV are different specifications with different cold-viscosity and wet-BP requirements; do not substitute one for the other where the OEM is specific.
What does the 'LV' or Class 6 designation mean?▾
ISO 4925 Class 6 is the low-viscosity variant of DOT 4, with a maximum kinematic viscosity at −40°C of 700 mm²/s. It exists for vehicles with ABS, ESP, and other electronically controlled hydraulic modulators that depend on fast valve response at very cold temperatures — primarily BMW, Audi, Mercedes, and certain Ford applications. A standard DOT 4 fluid may be too viscous for those modulators in winter conditions. Pentosin DOT 4 LV is one of the OE-spec fluids called out for these systems.
Is the Pentosin DOT 4 LV compatible with ABS, ESP, and traction control?▾
Yes. The TDS and Amazon listing both explicitly state the fluid is engineered for vehicles with ESP and ABS. The boric-acid-triester / glycol-ether chemistry is the correct (non-silicone) base for all modern electronically modulated brake systems. DOT 5 silicone fluid is the type that is incompatible with these systems — never substitute DOT 5 for DOT 4 LV.
Why does the SDS show H361d (reproductive risk) but not Prop 65?▾
H361d is a GHS classification triggered by the boric-acid-triester base (CAS 302790-70-1) at 75–100% — boric acid is classified as Reprotoxic Category 2 in the EU. California's Prop 65 list, however, does not currently include CAS 302790-70-1, DIPA (CAS 110-97-4), or TEGBE (CAS 143-22-6) as developmental or reproductive toxins. The two systems use different evaluation criteria, so a product can carry a GHS reproductive-risk H-code without triggering a Prop 65 warning. SDS §15 documents this explicitly: 'no chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.'
How does Pentosin DOT 4 LV compare to OE Motorcraft fluid?▾
Pentosin is the formulation behind multiple OE-spec part numbers on the bottle — Ford WSS-M6C65-A2 and Motorcraft PM-20 approvals are explicitly listed on the TDS, alongside the BMW, MINI, Audi/VW, GM, and Saab OEM reference numbers. Several owner forums note that Motorcraft-branded DOT 4 LV is the same Pentosin chemistry rebadged. For the listed European and Ford applications, this fluid is the OE-spec choice; for vehicles that simply call for generic DOT 4, a commodity DOT 4 fluid is also acceptable.
From the manufacturer
Marketing copy from Pentosin, via Amazon. Not editorial.
- •Pentosin DOT 4 LV is a special brake fluid of highest DOT 4 performance levels and extremely low viscosity at cold temperatures
- •DOT 4 LV offers safety against vapor lock, with excellent resistance to absorbing and retaining water, while providing superior corrosion resistance
- •Pentosin DOT 4 LV brake fluid is ideal for all modern vehicles with ESP and ABS and can be used in ALL vehicles that require DOT 4 fluid
- •OE Reference Numbers: Audi/Volkswagen: B 000 750 M1 (MX), B 000 750 M2, B 000 750 M3, B 000 750 M7, B 000 750 M9; BMW/Mini: 83 13 0 139 895, 83 13 0 139 896, 83 13 0 139 897, 83 13 0 139 898, 83 13 0 139 899, 83 13 0 139 902, 83 13 2 184 843
- •OE Reference Numbers (Continued): BMW/Mini: 83 13 9 407 864, 81 22 0 142 155, 81 22 0 142 156, 81 22 0 146 735; GM 19299570; Saab 93165410
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Manufacturer videos
Manufacturer images
Manufacturer specifications
- Material
- Abs
- Brand
- Pentosin
- Package Information
- Can
- Liquid Volume
- 33.81 Liters
- Item Weight
- 1.18 Kilograms
- Brand Name
- Pentosin
- Recommended Uses For Product
- Vehicle
- Specific Uses For Product
- Prevent Corrosion
- Item Form
- Liquid
- Global Trade Identification Number
- 04008849207228
- Manufacturer
- Pentosin
- Unit Count
- 33.8 Fluid Ounces
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Top Amazon review
↗External — Amazon's most-helpful review for context.
Great quality for the price
Was looking for a good quality brake fluid that was somewhere between cheap parts store stuff and full on exotic race fluid. This fit the bill very nicely. Running it in a high performance vehicle that sees extended periods of sitting in a colder climate. Can't comment on longevity, but given my experience so far I will be switching my other vehicles to this when it comes time to bleed / refresh their brake systems