In June 2016, the Panama Canal Authority, the body that operates the Panama Canal, opened the third set of locks that facilitated the transit of larger ships, the first such expansion since the canal was completed in 1914. In the years since the canal was expanded, the largest change in petroleum flows through the canal has been the increase of hydrocarbon gas liquids (HGL), especially propane, from the U.S. Gulf Coast to destinations in Asia, says an article published in US Energy Information...
http://mfame.guru/more-propane-and-hydrocarbon-gas-liquids-to-transit-the-expanded-panama-canal/