Description
Castrol Syntilo CR 4 is a synthetic water-miscible coolant that forms a clear, stable solution in hard and soft water. It offers excellent corrosion protection and long fluid life.
- Pack size: 20 l canister
- Also available in: 208 l drum
Applications
- Surface, cylindrical, double disk and centreless grinding, especially of tungsten carbide
- General grinding of ferrous metals
Features
- Minimizes cobalt leaching to avoid health hazards and improve part/tool life
- Improves surface finish of tungsten carbide parts
- Low foaming in all water conditions
- Excellent resistance to microbial growth
- Separates tramp oil for easy removal
- High stability for long-term use in central systems and individual machines
- Quick chip settling for clean work areas
- Corrosion protection in both soft and hard water
Technical specifications
| Appearance (Concentrate) | Transparent yellow |
| Density @ 20 °C, DIN 51757 | 1.13 kg/m³ |
| Mineral Oil Content | 0% |
| Appearance (Solution) | Transparent |
| pH (3-5% solution), DIN 51369 | 9.2 |
| Refractometer Factor | 1.4 |
Product information
Castrol Syntilo CR 4 is a high-performance synthetic grinding fluid developed for use with tungsten carbide and ferrous materials. It prevents cobalt leaching from carbide tools, extending their life and improving surface finishes. The product is free from boron, chlorine, phenol, and nitrites, making it environmentally friendly and operator-safe. Syntilo CR 4 maintains stable operation in a variety of water conditions, resists microbial contamination, and delivers long system life. The fluid exhibits excellent flushing capabilities, prevents chip accumulation, and maintains a clean workspace.
Castrol Syntilo CR4, Castrol Syntilo CR-4
Hazard Information (CLP)
Signal word: Warning
Hazard statements (H-phrases)
- H319 – Causes serious eye irritation.
- H412 – Harmful to aquatic life with long lasting effects.
Precautionary statements (P-phrases)
Prevention:
- P280 – Wear eye protection or face protection.
- P273 – Avoid release to the environment.
- P264 – Wash hands thoroughly after handling.
Response:
- P305 + P351 + P338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P337 + P313 – If eye irritation persists: Get medical advice/attention.
Storage:
- Not applicable.
Disposal:
- P501 – Dispose of contents/container in accordance with local, regional, national and international regulations.
BP Europa SE, Erkelenzer Straße 20, 41179 Mönchengladbach, GERMANY, +49 800 7235 074, [email protected], www.bp.com






François T. –
Product as described.
Clara –
Not too big, not too small, just perfect. Super fast delivery, thank you. No unpleasant smell, which I really appreciate.
Lucy N. –
Easy to use, no mess at all. Very effective, I noticed a change in just a week.
felix_x –
Fast delivery and exactly as described. Very good experience.
Alessia Y. –
Looks even nicer in real life. I noticed a difference after a short time! Better than anything I’ve tried before.
felix_x –
Perfectly as described. Everything was smooth and fast. Works great.
olivier_75 –
Quality is excellent.
Julie L. –
Pleasant to use at home.
romane_75 –
Very satisfied, better than I expected. Excellent product, worth every cent. Surprisingly good quality for the price. I noticed a difference after a short time!
tyler_xo –
Everything perfect, thank you. Practical and functional. Exactly as described. Received quickly.
carlo_s –
Solid product, would buy again. Fast and reliable. Arrived on time and in excellent condition. Super value for the money.
andreas_s –
Exactly what I was looking for. Great item. Everything in perfect condition. Exactly as in the pictures.
Fabian A. –
Works great.
leah_blossom –
Very satisfied, better than expected. Perfect for my needs, couldn’t be happier.
chris_77 –
Perfect from start to finish. Great customer support. Perfectly packaged. Top seller.