Calumet Specialty Products Partners, L.P. (“Calumet”) announced that it has signed a definitive agreement to acquire Royal Purple, Inc. for total consideration of approximately $335 million, The Royal Purple Acquisition is expected to close by the middle of July 2012, subject to customary closing conditions and regulatory approval.

Royal Purple is a manufacturer of high performance lubricants primarily for automotive, industrial, marine, motorcycle and racing applications.

Calumet is a leading independent producer of specialty hydrocarbon products in North America. Calumet processes crude oil and other feedstocks into customized lubricating oils, solvents, waxes and asphalt used in consumer, industrial, and automotive products. Calumet also produces fuel products including gasoline, diesel and jet fuel. Calumet is based in Indianapolis, Indiana and has eight plants located in northwest Louisiana, northwest Wisconsin, western Pennsylvania, southeastern Texas and eastern Missouri.