The Flemish institute for technological research (VITO) conducted an assessment of improvements in the environmental impact of lubricants over the past 20 years. The study focused on automotive engine oil as it accounts for the biggest share of the lubricant market. A life cycle assessment (LCA) approach was followed, studying the environmental impact per km driven. The study concluded that the environmental impact of automotive engine oil per km driven has fallen over the last two decades (see the graph below). Several developments have contributed to this. Motorists can now drive much longer distances with the same amount of oil, reducing the total environmental impact of lubricant and packaging. Lubricant waste management has also improved significantly, moving from uncontrolled disposal to recycling. Taking into account the reduction in fuel consumption resulting from the development of new automotive engine oils, the overall impact is far less for all indicators considered.