Multi-applications, multiple metals and harsh operating conditions make it difficult to keep
metal-working fluids stable. Tramp oil, swarf and waste can leach into the system and promote
bacterial growth, reduce the life of the fluid, compromise performance, and ultimately cause the
system to fail. Combating this requires constant maintenance intervention that add complexity
and cost to your operations. Castrol® Hysol® MB 50 makes a difference in the way you work,
saving you time and money.

Multi-purpose product capabilities
When your business performs a variety of operations
over a range of different metals, using a single
coolant often seems unachievable and with
compromises between quality, practicality and the
demand of your operations.
Developed to solve multiple challenges, Hysol® MB 50
can take you from a position of compromise to one
of strength. It gives you the advantages of a single
multi-metal, multi-purpose metalworking fluid with
all of the expertise of Castrol® engineering behind it.
Typical characteristics
Concentrate
Mineral Oil High
Ester Yes
Boron Yes
Amine Yes
Chlorides No
Biocide No
Emulsion Properties
Refractometer Factor 1.1
Concentration (%) 5 – 10
Appearance Translucent Milky
pH – 5% in DI Water 9.3 – 9.8
Cast Iron Chip Break Point 3%
Water Tolerance, gpg 5-35