When shopping for a new truck or looking to upgrade your current one, the biggest factor to consider is the kind of engine you want. Diesel engines are built widely different from each other to provide different specialties for various needs, and these days, more diesel engines are available than ever. As experts in optimizing trucks, allow us to tell you what you need to know about the top three diesel truck engines available.

Ford 6.7L Powerstroke

The latest Ford trucks are upgraded for the 2020 model year and equipped with the 6.7L Powerstroke engine. With a 36,000 PSI fuel-injection system, this engine will provide you with 475 hp of power and 1050 lb-ft of torque. As a result, modern Ford trucks can tow up to 37,000 pounds on stock parts alone! As far as turbochargers go, this engine comes with a Garret single variable-geometry turbocharger.

At its default, this engine will provide 18 mpg on a highway and about 15 mpg in the city. Powerstroke aftermarket parts can help you squeeze every ounce of potential from this engine for a truly powerful vehicle that is highly fuel efficient.

Duramax 6.6L Turbo-Diesel

The Duramax 6.6L turbo-diesel is the leading engine if you want something with a relatively impressive fuel economy and plenty of power. You can find these engines in Chevrolet Silverado HD models.

Featuring 445hp of power and 910 lb-ft of torque, this engine is a bit weaker than the Ford Powerstroke—having a towing capacity of 18,000 lbs—but is by no means lacking in overall performance. As stated previously, this engine is the most efficient with fuel consumption, averaging 20 mpg, and features a Garret variable-geometry turbocharger as a default.

High-Output 6.7L Cummins

Another one of the best diesel truck engines you should know is the High-Output 6.7L Cummins. Renowned for its towing capabilities, you’ll find that this engine provides towing capabilities up to 35,100 lbs of weight and lies in RAM 3500 trucks. This engine provides the least power at 400 hp and a range of 14-17 mpg but makes up for it by delivering 1,000 lb-ft of torque. Like the other two top contenders, the 6.7L Cummins engine uses the same turbocharger to achieve these impressive results.