Engine Control Systems Limited (ECS) is an environmental company specializing in the design and manufacturing of verified exhaust treatment solutions. The Company offers a full range of products for OEM, Aftermarket and retrofit markets for the reduction of exhaust emissions of on-road, off-road and stationary diesel, gasoline and alternative fuel engines including propane and natural gas. The company has operations in Canada, Sweden and the United States. ECS was a carve-out of Lubrizol (formerly NYSE: LZ).