Soluble Coolants

Castrol Hysol EM 400

High performance Oil Phase-Multipack Soluble Metalworking Fluid


Castrol Hysol TM EM 400 is the oil phase of the innovative Castrol Multipack metalworking fluid system. Castrol
Multipack combines the effectiveness of advanced metalworking fluid performance with the efficiency to manage fluid
systems for maximum sump life. Hysol EM 400 is the vegetable oil phase containing advanced lubricity components to
ensure improved tool life and part quality. It is used in conjunction with Boost WP Series which are the available water
phases containing fluid management components to ensure bacteria control, pH stability and corrosion protection.
Castrol Multipack technology allows for variable concentrations of each phase depending on severity of operation. In
addition, lower fluid make-up costs are achieved as only depleted components are added back to the metalworking fluid


Multi-pack vegetable oil base for machining of steel and aluminium alloys. It should be used only in combination
with Boost WP water phase.

  • Chlorine and nitrite free to fulfill your local legislation, waste treatment and environmental requirements
  • Improved environmental compliance with the use of renewable, vegetable oil technology
  • Advanced lubrication to extend tool life and improve part finish
  • Versatile fluid suitable for a wide range of applications on multiple metals
  • Excellent stability in recommended water conditions
  • Excellent foam control
  • Developed specifically for Castrol Carelube lubrication technology
Mineral oil1-20%
Concentration range3-15%
Metal typeAluminum, Cast Iron, Yellow Metal
Multi metals suitableYes
Ester/EP additivesYes
Formulated without Chlorinated ParaffinYes
Formulated without BoronNo
Superior biodegredationNo
Product typeMetal Working Fluids
Applicable to these sectorsAutomotive Manufacture, Machinery, Metal Goods

Grinding 1-3% Hysol EM 400 + 1.5-2.0% Boost WP Series
Machining 4-8% Hysol EM 400 + 1.5-2.0% Boost WP Series
Water range 100-300 ppm CaCO3

Castrol Hysol EM 400 metalworking soluble cooling fluids

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