Description
Castrol Brayco Micronic 756 is a low viscosity petroleum-based hydraulic fluid, red in color, developed for demanding aerospace and ordnance applications. It offers excellent viscosity-temperature stability and long-term performance in hydraulic systems operating under wide temperature extremes. (ISO VG 15)
- Size: 18.9 L pail
Application
- Designed for aircraft, missile, and ordnance hydraulic systems requiring long-term stability and low temperature performance
- Used in autopilots, shock absorbers, brake systems, flap controls, and hydraulic servos
- Meets rigid cleanliness requirements through filtration
- Compatible with synthetic sealing materials
Features / Advantages
- Excellent low-temperature properties for reliable startup and operation
- High resistance to oxidation for extended fluid life
- Low rubber swell ensures material compatibility
- Good anti-wear performance to protect hydraulic components
- Stable viscosity index using low molecular weight polymer additives
- Bright red color for identification
Technical specifications
| Manufacturer number | 15EFD3 |
| Product type | Petroleum-based hydraulic fluid |
| Color | Red |
| ISO Viscosity Grade | 15 |
| Temperature Range | -54°C to +135°C (-65°F to +275°F) |
| Military Specification | MIL-PRF-5606H |
| Military Symbol | OHA |
| NATO Code | H-515 |
Additional Information
Brayco Micronic 756 should be used in systems requiring clean, thermally stable fluids compatible with synthetic rubber seals. It is not designed for systems that require fire resistance or phosphate ester compatibility.
Fluids compounded to this spec undergo predictable changes with time and use. Monitoring fluid condition and scheduled replacement is recommended to maintain system integrity.
For further details on cleaning procedures, filtration or fluid management practices, please contact Castrol Technical Services.
Hazard Information (CLP)

Signal word: Danger.
Hazard statements (H-statements)
- H304: May be fatal if swallowed and enters airways.
- H412: Harmful to aquatic life with long lasting effects.
Precautionary statements (P-statements)
Prevention:
- P273: Avoid release to the environment.
Response:
- P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER or physician.
- P331: Do NOT induce vomiting.
Disposal:
- P501: Dispose of contents and container in accordance with all local, regional, national and international regulations.
Supplemental label elements (EUH-statements)
- None.
Storage and Disposal
- Special storage requirements: Not applicable.
- Disposal according to regulations (see P501).
Other relevant information
- Child-resistant packaging: Not applicable.
- Tactile warning of danger: Not applicable.
- This mixture does not contain substances assessed to be PBT or vPvB according to Regulation (EC) No. 1907/2006, Annex XIII.
BP Europa SE, Erkelenzer Straße 20, 41179 Mönchengladbach, GERMANY, +49 800 7235 074, [email protected], www.bp.com






Grace –
Perfect for my needs, couldn’t be happier. Not too big, not too small, just right. Looks even nicer in person. Very satisfied, better than expected.
maximilian88 –
Delivered earlier than expected. Easy to assemble.
lea_sonne –
The quality surprised me in a good way. Pleasant to use at home. Packaging slightly damaged, but the product is excellent. Better than anything else I’ve tried before.
benjamin23 –
Exactly what I was looking for.
Isabelle C. –
Packaging was slightly damaged, but the product is excellent. Looks even nicer in real life.
Maja –
Packaging slightly damaged, but the product is excellent.
margaux88 –
I’ve been using it for 2 weeks and I already see results! Better than anything I’ve tried before. Very satisfied, better than I expected.
Massimo Z. –
Excellent-quality product.
Markus –
100% recommended.
nathalie_fr –
Not too big, not too small, just perfect. Perfect for my needs, couldn’t be happier. Easy to use, no mess at all.
owen_88 –
Very practical.
Caleb –
Everything’s great. Great service and product. Better than I thought; I’m satisfied. Well packaged and secure.
Charlotte T. –
Perfect for my needs; I couldn’t be happier.
ines_belle –
I’ve been using it for 2 weeks and I already see results! Very satisfied, it’s even better than I expected. I’ve been using it for 2 weeks and already see results! Better than anything I’ve tried so far.