Interdynamics Certified A/C Pro R-134a Ester Oil Charge With ICE 32 (3 ounces) Meets OEM specifications Stable to residual chlorine from R-12 ISO 100 viscosity SUS at 100 degree Fahrenheit ICE 32 lubricant enhancer: advanced chemistry to help extend compressor life and improve cooling capacity Medium viscosity ester oil charge for all R-134A air conditioning systems