CASTROL Singapore wanted more than data processing from a computer system. It was looking for a means to provide up-to-the-minute information to enhance its operations. Since the adoption of the BPCS in 1990, Castrol has achieved productivity gains in the areas of manufacturing, finance, marketing and distribution. The system also helped Castrol gain ISO 9001 status last year, the first company to do so in Singapore. This is one of a series of quality standards that can be used for external quality assurance purposes. Castrol was required to achieve quality assurance in design/development, production, installation and service. Castrol Singapore's MIS manager, Simon Chia, said SSA's integrated BPCS information processing system was a great boon. ''As part of 9001 requirements, our production procedures had to be documented,'' said Mr Chia. ''With the help of BPCS products . . . all production procedures can be structured and kept on track. ''We have also installed two other BPCS products, Customer Order Processing and Inventory Management, so that we can simplify our stock posting procedures, and maintain a more accurate stock level.'' We choose BPCS because it met more than 80 per cent of our needs,'' said Mr Chia. ''BPCS enables our users to monitor business analyses, sales and inventory and keeps track of market trends.'' With operations spread across several countries, Castrol wanted a system to track domestic and export business. ''ISO 9000 status has become a requisite for export-orientated companies to conduct business,'' said Mr Chia.