refrigeration oil for NH3

[afeef]

Ultracool 68 from Ultramar is good also.

thanks karelsdr, yesterday i get replay from howden in uk, they recomend the mobil gargoyle arctic 300,for operation , the compressor is 3000rpm,evaporation temp.8C,condensing temp.60-65C,oil temp.inlet80C,oil temp.outlet 64C
best regards