May 3, 2021 12:30 PM, EDT Engine Oil Suppliers Target Sustainability Amid Broader Push to Reduce Emissions Phillips 66 As the trucking industry explores zero-emission technologies such as battery-electric and hydrogen fuel cell vehicles, heavy-duty engine oil suppliers are applying less conspicuous methods of curbing airborne particulate matter and carbon emissions. Trucking’s major lubricant brands have been introducing formulations aligned with the rising market demand for more environmentally conscious products amid stricter emission regulations and corporate pledges to improve sustainability. Some of the new engine oils are designed to boost fuel economy and improve the efficiency of emission control systems on modern diesel engines.