Wayne, NJ - March 4, 2005- The revitalization of diesel engines within the passenger car and light truck markets means installers, retailers and consumers will see their engine oil needs change. BP Lubricants Americas, who continuously sets the standard for high-performance lubricants, is launching Castrol® GTX™ Diesel to meet this need.

Many car and light truck manufacturers are launching diesel engines in the US and experts expect this category to grow as lighter diesel engines are available which are more environmentally conscious, have improved fuel economy and increased horsepower over the diesel engines of the past. As consumers look to improve fuel economy, the popularity of these engines will increase and their engine oil needs will change.

To prepare installers for this opportunity, BP Lubricants Americas has launched Castrol® GTX™ Diesel 15w-40 oil for superior lubrication for passenger cars and light truck diesel engines. C Castrol® GTX™ Diesel is engineered to protect the engine from piston deposits, oil thickening and valve train wear, while minimizing the formation of engine sludge through the use of anti-wear additives, anti- oxidants and detergents.

Castrol® GTX™ Diesel 15W-40 is recommended for Cummins, Navistar, Ford (WSS-M2C171D), Volkswagon and Mercedes Benz 4-stroke diesel engines where API CI-4, CH-4, CG-4 is required. Castrol GTX™ Diesel 15W-40 is approved against the Mack EO-M and EO-M+ specifications and meets the performance requirements of the Cummins CES 20071, 72 and 76 specifications. Castrol® GTX™ Diesel also meets the engine protection requirements of API SL, SJ and ILSAC GF-3 for API Certified Gasoline Engine Oils.

To find out more about Castrol products and programs 1-888-CASTROL or log onto www.castrol.com/us.