Petronas Tutela TOP 4/S
DOT 4 brake fluid with boric esters, 265 °C dry and 173 °C wet boiling point
SAE J1703
PETRONAS Tutela Brake Fluid Extreme HT is a brake fluid based on glycol ethers and boric esters, developed for special racing applications where braking systems are pushed to extreme temperatures. Its very high dry boiling point of 285 °C and wet boiling point of 201 °C keep the fluid stable under intense, repeated braking and protect against vapour lock and fade. The fluid is clear, yellow to amber in colour, with a density of 1.074 g/cm³ at 15 °C, a viscosity of 2.6 cSt at 100 °C and 1230 cSt at -40 °C, a water content below 0.2% and full rubber compatibility, ensuring seals and hoses are preserved. Specifications and approvals: FMVSS 116 DOT 4, SAE J1703, SAE J1704, ISO 4925 Class 4, CUNA NC 956-01, ENSAYOS INTA - UNE 26-109-88, FIAT 9.55597 (Contractual Technical Ref. No. F001.M01), Maserati approved.
CUNA NC 956-01 — Italian lubricant classification
The CUNA classification — the Italian automotive standards commission — which numbers the categories of vehicle lubricants and fluids.
UNE 26-109-88, INTA testing — engine oil (Spain)
The Spanish engine oil standard, with the testing carried out by INTA, the national aerospace technology institute that certified them.
FMVSS 116 DOT 4 — brake fluid
The US federal safety regulation defining the DOT brake fluid levels. DOT 4 demands a high boiling point both dry and after the fluid has taken up water.
Brake fluid Class 4 — ISO 4925
The international standard for glycol brake fluids; class 4 matches the DOT 4 level, with a high boiling point both dry and wet.
SAE J1704 — DOT 4 brake fluid
The SAE standard for DOT 4 brake fluids, with a higher boiling point than DOT 3, particularly once the fluid has taken up water.
SAE J1703 — DOT 3 brake fluid
The SAE standard for glycol brake fluids at the DOT 3 level, defined by dry and wet boiling point.
| Property | Typical value | Method |
|---|---|---|
| Appearance | CLEAR | |
| Density 15°Cg/cm³ | 1,074 | ASTM D 4052 |
| Viscosity @ 100°CcSt | 2,6 | ASTM D 445 |
| Viscosity @ -40°CcSt | 1230 | ASTM D 445 |
| Boiling point°C | 285 | ISO 4925 |
| Wet boiling point°C | 201 | ISO 4925 |
| Rubber COMPATIBILITY | PASS | |
| Water content% | < 0,2 | ASTM D 1364 |
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