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Frigutec® Engine Coolants

Frigutec® BS-NF

Frigutec® BS-NF is an economical engine coolant concentrate based on 1,2-ethanediol (MEG), which guarantees the standards according to AFNOR NF R15-601. Frigutec® BS-NF protects the cooling system of the engine against frost, overheating, corrosion and all damage under normal operating conditions on the basis of mineral additives borate and silicate. Frigutec® BS-NF is free of nitrite, amine and phosphate.

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Product details


Frigutec® BS-NF offers the user the following advantages:

  • Corrosion protection
  • Antifreeze protection
  • Protection against overheating
  • Seal compatibility
  • Hard water stability
  • Cost effectiveness
  • Analyses and quality controls
  • Flexible quotation
  • Weekly, monthly, quarterly and seasonal prices possible


Frigutec® BS-NF exceeds the requirements of the following coolant standards:

  • AFNOR NF R15-601 as of June 1991
  • BS 6580:2010
  • ASTM D3306


Frigutec® BS-NF offers year-round protection against frost and corrosion.
Frigutec® BS-NF concentrate must be diluted with water before use! We recommend a mixing ratio of 1:1 in volume with demineralised or distilled water. Under no circumstances should Frigutec® BS-NF be used with less than 33 vol.% or more than 60 vol.%.

Miscibility with other engine coolants

Frigutec® BS-NF concentrate only works optimally if you empty the entire cooling system, rinse it and fill it completely with Frigutec® BS-NF mixed with distilled water in a 1:1 ratio.

In principle, Frigutec® BS-NF can be mixed with all commercial engine coolant agents based on 1,2-ethanediol (MEG) with mineral additives. However, each manufacturer has found and tested a specially optimised composition of inhibitors which, when mixed with other radiator antifreeze agents from other manufacturers, still work well, but no longer as optimally as Frigutec® BS-NF alone.

In the event of a warranty claim, it is often impossible to assign the cause that triggered the warranty if several different makes have been used.

Therefore, we recommend the use of Frigutec® BS-NF only.

Physical and chemical properties

We will be happy to inform you personally about the physical and chemical properties of our coolants. We look forward to your enquiry.

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