Frigutec® engine coolants

Frigutec® OAT-EVO

Frigutec® OAT-EVO is the most modern premium engine coolant concentrate of the Frigutec® series based on monoethylene glycol with state-of-the-art Si-OAT corrosion protection technology. With Si-OAT technology, organic acids work together with the mineral silicate for the best possible protection. Frigutec® OAT-EVO is also free from the harmful 2-ethylhexanoic acid.
Frigutec® OAT-EVO meets the requirements of the most modern high-performance engines in a special way with regard to thermal stress, long-term stability and long-term corrosion protection. Frigutec® OAT-EVO is free from nitrites, amines, phosphate, borates and 2-ethylhexanoic acid.
We recommend Frigutec® OAT-EVO especially for the current VW vehicle generation, which are first filled with the G12evo, as well as all BMW vehicles built from 1988 onwards.

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Product details


Frigutec® OAT-EVO offers the user the following advantages:

  • Outstanding long-term corrosion protection
  • Outstanding protection against thermal stress
  • Outstanding long-term stability
  • Outstanding silicate stability
  • Best possible antifreeze protection
  • Outstanding sealing and material compatibility
  • Outstanding economic efficiency due to special long-term protection
  • Controlled quality
  • Flexible quotation
  • Weekly, monthly, quarterly and seasonal prices possible

Standards and OEM recommendations

Frigutec® OAT-EVO clearly exceeds the requirements of the following coolant standards:

  • ASTM D3306
  • ASTM D4985
  • ASTM D6210
  • BS 6580:2010
  • AFNOR NF R15-601 as of November 2020
  • SAE J1034
  • CUNA NC 956-16

Frigutec® OAT-EVO has no manufacturer’s approvals. Frigutec® OAT-EVO is recommended by us for the following OEM standards and guidelines:

  • VW Group TL 774 L (G12evo)
  • BMW from 1988 onwards (LC-87)
  • Mini
  • Rolls Royce
  • MAN 324 Si-OAT


Frigutec® OAT-EVO offers outstanding year-round protection against frost and corrosion.
Frigutec® OAT-EVO 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® OAT-EVO be used with less than 33 vol.% or more than 60 vol.%.

Miscibility with other engine coolants

Frigutec® OAT-EVO concentrate only works optimally if you drain and rinse the entire cooling system and refill it completely with Frigutec® OAT-EVO mixed with distilled water in a 1:1 ratio.
In principle, Frigutec® OAT-EVO can be mixed with all commercial engine coolant agents based on 1,2-ethanediol (MEG) with organic 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® OAT-EVO 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® OAT-EVO 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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