Base oils supply in the Asia-Pacific region rose in March to the highest in more than six years, helping to cover a seasonal rise in demand.Base oils supply of more than 1.10mn t in March rose from close to 852,000t the previous month, government and industry data showed.The volume was up from typical levels of around 930,000 t/month over the past year and from just over 1.00mn t in March 2022.Higher base oils supply in the month of March this year more than covered a seasonal rise in demand in Asia-Pacific.Plant maintenance work often takes place around the same time, limiting a rise in supply to cover the pick-up in demand.A heavy round of plant maintenance in Asia is set to take place this year, but mostly during the second quarter of the year..Asia’s February base oils supply falls