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Frigutec® engine coolants

Frigutec® M-OAT

Frigutec® M-OAT is a premium class hybrid engine coolant concentrate based on 1,2-ethanediol (MEG). M-OAT stands for Mineral and Organic Additive Technology. This means that with Frigutec® M-OAT a mineral additive system and an organic additive system work together to increase performance.

Frigutec® M-OAT provides long-lasting corrosion protection for engines made of cast iron and aluminium or combinations of the two metals as well as cooling systems made of aluminium or copper alloys and protects against overheating and frost. Frigutec® M-OAT is free of nitrite, amine and phosphate. Frigutec® M-OAT complies with most European and international standards such as ASTM D3306. We recommend Frigutec® M-OAT for a number of OEM standards such as VW 774-C (G11).

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Product details


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

  • Excellent long-term corrosion protection
  • Optimum antifreeze protection
  • Optimum protection against overheating
  • Excellent seal and rubber compatibility
  • Optimum hard water stability
  • Excellent economy due to long-term protection
  • Analyses and quality controls
  • Flexible quotation
  • Weekly, monthly, quarterly and seasonal prices possible

Standards and OEM recommendations

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

  • ASTM D3306
  • ASTM D4985
  • BS 6580:2010
  • CUNA NC 956-16
  • AFNOR NF R15-601 as of November 2020
  • SAE J1034
  • ÖNORM V 5123
  • SANS 1251:2005
  • CHINA GB 29743-2013
  • JIS K 2234:2206

Frigutec® M-OAT has no manufacturer’s approvals. However, we recommend the use of Frigutec® M-OAT for a number of OEM standards, which we will be happy to send you together with a quotation. Below are some examples:

  • VW Group TL 774 C (G11)
  • Daimler/Mercedes-Benz 325.0 and 326.0
  • MAN 324 NF
  • MTU MTL 5048
  • Deutz DQC CA-14
  • BMW GS 94000


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

Miscibility with other engine coolants

Frigutec® M-OAT concentrate only works optimally if you empty the entire cooling system, rinse it and fill it completely with Frigutec® M-OAT mixed with distilled water in a 1:1 ratio.
In principle, Frigutec® M-OAT can be mixed with all commercially available hybrid engine coolant agents based on 1,2-ethanediol (MEG) with a mineral and organic additive system. 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® M-OAT 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® M-OAT 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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