... and thermal degradation far superior to mineral oil-based air compressor oils. They provide outstanding equipment protection and reliability ... for compressors operating under conditions where other air compressor oils are not meeting expectations. Mobil Rarus SHC ... A, ASTM D 665PassPassPassPour Point, ASTM D 97, ºC, max-48-45-45Flash Point, ºC, ASTM D 92245246246Specific Gravity ...