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Heavy Duty Engine Oil | DURON™-E 15W40

Supplier: Imperial Oil & Chemical

DURON™-E 15W40 Heavy Duty Engine Oil provides exceptional protection against increased engine wear, sluggishness and shortened engine life - all costly effects of soot.

Price Guide: POA

It's proven. The advanced soot control of DURON-E ensures you get a lot more out of your engine - in the short-term as well as over the long haul.

Soot, a by-product of diesel fuel combustion is in every engine, every year, make and model and today's tough operating conditions can produce and retain more soot than ever before. Left unchecked, it can have a damaging impact on your engines - and your bottom line.

Using DURON-E ensures you get the most from your equipment. It means better reliability, less downtime and increased productivity - all key factors in the success of your business and that's because DURON-E has been specifically formulated to disperse up to 2.2X1 more soot than the industry standard - clearly, the leader in soot control.


Minimising engine wear is critical to reducing downtime and extending the life of your engine. By controlling soot, DURON-E provides exceptional defence against wear.

  • Soot particles left uncontrolled can agglomerate and harden into abrasive clumps that can scratch and score critical engine components
  • Higher soot loads can increase the oil's viscosity - that can leave engine components under-lubricated.
  • Poor shear stability can reduce film thickness of the oil. Effective piston sealing relies on a strong oil film to prevent soot and other contaminants from moving past the rings to get to critical engine components, where damaging wear can occur.

Extended drain intervals

DURON-E helps you to safely and confidently extend drain intervals2 - keeping your on-highway fleet or heavy duty off-road equipment running longer and saving you money. It's been proven to maintain its soot fighting abilities, and stay in-grade longer.

All-weather performance

You can also rest assured that your engine will be well protected in all-weather conditions. In the harsh cold, you can rely on DURON-E's excellent cold-cranking and cold-pumping properties to ensure you get the performance and protection you need. In extreme high temperature operations, you can rely on DURON-E's advanced shear stability formulation to maintain its stay-in-grade performance throughout extended, high temperature operation, ensuring continued protection of your engine.