TSI Supercool P150-8 PAG 150-Viscosity Oil - 8 oz 150 Viscosity high performance synthetic PAG for R134a systems provides excellent resistance to moisture Anti-Wear Agents and Friction Modifiers enhance compressor and A/C system efficiency while reducing compressor wear rates which extends compressor life Anti-Oxidants protect system against formation of sludge and other deposits which can shorten compressor life and reduce system efficiency Meets OEM Performance Specifications