Base oil production in the United States dropped 9 percent in 2019, according to recently released data, as refiners perhaps let some air out of an over-supplied market. Exports – including those to most of the Americas – decreased, and imports swelled as domestic usage remained relatively flat.

A Federal District Court judge in Missouri granted preliminary approval to a class action settlement providing reimbursement to customers who purchased certain tractor hydraulic fluids labeled as 303 products and marketed by Citgo and another company.

Calumet Specialty Products Partners L.P. will close a lubricants plant in New Jersey and furlough manufacturing employees at a Missouri synthetic lubricants plant as part of its efforts to shore up the company’s balance sheet, according to a statement released last week.

WD-40 posted net income of $14.3 million for the quarter ending Feb. 29, down 10 percent from the year-earlier period, with net sales down 1 percent at $100 million.