Polyalphaolefins (PAOs), the most common synthetic oil, are produced from ethylene. In the US, this overwhelmingly means being produced from natural gas, as US

Polyalphaolefins (PAOs), the most common synthetic oil, are produced from ethylene. In the US, this overwhelmingly means being produced from natural gas, as US fracked gas is rich in ethane, the feedstock for ethylene production. https://www.cpchem.com/what-we-do/solutions/polyalphaolefins/technology https://www.cpchem.com/what-we-do/solutions/polyalphaolefins...