UPDATE ON LAUNCH OF NEW CASTROL® DURATEC™ ES 15W-40 FORMULATION

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Castrol will be producing Duratec ES 15W-40 to meet the new Cummins CES 20092 spec in late September, which is later than the original July projection. The new product will make its way through the supply chain to customers over the last quarter of 2019. 

The new Duratec ES will be specifically formulated for modern natural gas engines with high-quality synthetic base oils that take performance to the next level – enabling drain intervals of up to 1,200 hours.* 

Although natural gas engines burn cleaner, they also burn hotter, making acid neutralization and oxidation and nitration control critical in protecting engines from deposits and wear over the useful life of the oil. 

The new CES 20092 spec will provide significantly improved oxidation and thermal stability when compared to previous versions. 

Important Notes

• Cummins will obsolete the current CES 20085 spec as of January 1, 2020
• The new CES 20092 spec will be fully backwards compatible, so there will be no issues with mixing old and new Duratec ES products in bulk tanks and natural gas-fueled engines
  
• There will be no changes to Castrol part numbers
• Bulk, tote, and drum labels will be updated to feature the new CES 20092 spec as part of the transition

Please reach out to your Castrol sales representative if you have any questions.

*Extending oil drain intervals should only be done in conjunction with a comprehensive used oil analysis program like Castrol Labcheck