If you’re looking to replace the engine in your current semi truck, consider the Cummins ISX engine, originally called the “Signature” series engine, is an Inline (Straight)-6 diesel engine produced by Cummins. The right engine can be crucial for efficiency and performance, choosing the right one can save you time and money later on down the road. Once you determine the kind of loads you’re hauling with your truck and the main type of road and/or terrain you’re going to be traveling on, you can weigh your options when it comes to features. Whether you are transporting liquid across flat roads or heavy lumber or cargo over mountain terrain, you need something heavy-duty that will last. This Cummins engine was built for heavy-duty trucks and motorcoaches and uses the “Interact System” (stands for the IS in ISX) enabling it to run on diesel fuel and natural gas. If you compare the Cummins ISX engine with the DD15 engine, both are close to an equal match within the heavy-duty diesel truck class. One engine is not fundamentally more reliable than the other and both boast very similar specs. Both of these engines optimize fuel economy and reliability with overall lower costs of operation, while providing superior performance for hauling tough, heavy loads across miles and miles of open road. These engines are both built to last so expect years of dependable use from either one you choose, whether its for construction, dump, government, fire and emergency, distribution, oil & gas, regional or motorhome use.
The Cummins ISX engine is comparable to the DD15 engine when it comes to horsepower and torque rating as well as the advanced cooling system that allows for better performance. The maintenance requirement for the Cummins ISX engine is almost the same as the DD15 engine with an oil filter change needed every 35,000 miles. Both engines carry a very similar warranty and valve adjustment maintenance need. Both engines are close to 15L with similar horsepower and foot pounds of torque. Both are running with a high pressure fuel system, a diesel particulate filter designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine, a selective catalytic reduction (SCR) system and are both utilizing diesel exhaust fluid (DEF). The Cummins ISX has a single overhead cam while the DD15 has a dual overhead when it comes to cam design. When it comes to maintenance, side-by-side it’s going to be pretty close to the same for both engines since both have similar oil change timing requirements for severe duty. Depending on maintenance, both engines have a similar life expectancy which allows for ease of mind when it comes to a purchase decision. When it comes to the after-treatment system, both allow maintenance requirements to be less often but consistent. When it comes to durability, these two engines are very comparable because they both have durable engines when kept up with a regular maintenance schedule, the key to a long-lasting engine.