Syntilo MR 81 BF is a mineral oil free, synthetic water-mix metalworking fluid formulated without boron and formaldehyde releasing agents. It forms a clear, stable solution in both hard and soft waters and is recommended for surface, cylindrical, double disk and centreless grinding of ferrous metals.
Recommended concentrations
Grinding: 3–5 %
Water hardness range: up to approx. 22 °dH (0–400 ppm CaCO₃)
FAQ – Frequently Asked Questions about Castrol SYNTILO MR 81 BF
Which applications is SYNTILO MR 81 BF designed for?
It is designed for grinding and light to medium-duty machining of ferrous materials.
Is SYNTILO MR 81 BF boron- and formaldehyde-free?
Yes, it is boron-free and contains no formaldehyde-releasing biocides.
Can the product be used in central coolant systems?
Yes, it is suitable for both stand-alone machine sumps and central coolant installations with filtration.
How does the product behave with regard to foam?
SYNTILO MR 81 BF delivers low-foam performance within the recommended water hardness range.
Does it help keep the machine environment clean?
Yes, low residue formation supports clean and well-visible machine interiors.
