Oil prices slid Monday on concerns about weaker Chinese demand and the continued unwillingness by large producers to cut production. The U.S. oil benchmark has settled down by 5% or more five times this month, the highest number for any month since December 2008. The global glut of crude that sent prices plunging in 2014 persists, as large producers including Saudi Arabia and Russia continue to pump oil at full tilt, pushing inventories of crude oil and refined products around the world to above-average levels. Oil prices surged late last week on the prospect of new central-bank stimulus and expectations that a snowstorm in the Eastern U.S. would boost heating-oil demand. However, many analysts warned that the rally was unlikely to last as global production continues to exceed demand. Chinese data released Monday showed that diesel usage fell in 2015 from the prior year, according to Bloomberg News. […]