The Idemitsu Daphne Hermetic PAG Oil offers the same double end-capped technology that is used by over 85 percent of new vehicle A/C systems worldwide as factory fill, according to the company. The double end-capped formulation offers better chemical, thermal and hydrolytic stability than single end-capped PAGs. Those properties result in superior lubricity, wear and corrosion protection over a longer service life. Idemitsu Daphne Hermetic Oil PS is suitable for use with most major compressor models, types and designs that use R134a refrigerant. Idemitsu PAG oils are available in 46 and 100 ISO viscosity grades.