THE PROVEN NATURAL GAS ENGINE OIL THAT INCREASE OPERATIONAL EFFICIENCY
Full-synthetic technology for extended drain intervals of up to 1,200 hours* in modern natural-gas engines
SAFELY EXTENDS DRAIN INTERVALS WHILE KEEPING ENGINES CLEAN
Castrol Duratec™ ™ ES 15W-40 is 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 your engine from deposits and wear over the useful life of the oil.
Duratec ES meets the latest Cummins CES 20092 specification and is backwards compatible.
SUPPRESSES OXIDATION AND NITRATION
Higher combustion temperatures can lead to increased oxidation and nitrogen oxide formation. Duratec ES 15W-40 natural-gas engine oil suppresses and controls oxidation and nitration throughout extended drain intervals, preventing sludge, varnish, plugged filters, and deposits.
Duratec ES 1200-HOUR DRAIN
Outstanding Acid Neutralization
Acid formation can lead to corrosive wear. Duratec ES 15W-40 has outstanding combustion acid-neutralization capability throughout extended drain intervals, which helps prevent corrosion and protects critical engine parts.
Duratec ES 1200-HOUR DRAIN
For more information on Duratec ES and other premium Castrol lubricants for commercial vehicles, please visit castrol.com/hd