What Is The Most Reliable Semi Truck Engine?

Semi truck engines are among the most fascinating machines built. They can weigh almost 2,900 pounds and pull over 80,000 pounds and can cross the 1-million mile mark. These engines can run non-stop without any hiccups. Given these specs, the type of engine you select can make a big difference in terms of longevity, cost of ownership, and many other factors. So, what is the most reliable semi truck engine? This guide provides you with helpful insights into the most reliable engines for your truck.

What is the Best Semi Truck Engine?

The best semi truck engine for you is the one that specifically addresses your needs. When you are an owner-operator or seek to become one, you will need a truck that addresses your needs and lets you run your business profitably. A modern, smaller 13-liter block engine can be much more powerful yet efficient than its counterparts from the past. Even these smaller engines can be highly reliable and can generate up to 1850 Nm of torque and 500 HP. 13-liter engines are often better than 15 and 16-liter engines in terms of fuel efficiency.

Most Reliable Diesel Semi Truck Engines

PACCAR engines are considered by far the most reliable diesel semi truck engines. They are used by only two truck brands:

  • Kenworth
  • Peterbilt

Both the companies have a reputation for excellent customer service and a vast dealer network. Heavy-duty construction, low downtime, high reliability, and well-made parts make these trucks some of the best and longest-lasting semi trucks on the market. So, when it comes to truck engine repair needs, PACCAR engines have a minimal number of cases.

The other reliable semi truck engines are as follows:

Freightliner or Western Star
This brand produces 13-liter, 15-liter, and 16-liter engines of toque ranging from 600 Nm to 2050 Nm. They have a large dealer network and are known for their reliable trucks.

Mack or Volvo
This brand is also known for its highly reliable engines. It produces even more powerful engines with a torque range of 600 Nm and 2500 Nm. While there are many more options, most drivers prefer the 13-liter, 1850 Nm engine for hauling their loads.

The type of engine for your truck will usually be based on where you buy your semi truck. Certain manufacturers and dealers limit the semi truck engines that can be used when you buy from them.

Diesel Semi Truck Engines

Diesel is the most commonly used fuel for semi trucks. There are two types of fuels:

  • Diesel One
  • Diesel Two

Truckers use Diesel Two for their normal driving conditions. A diesel engine has a maintenance schedule ranging from 12000 to 30000 hours of use. It will also require multiple minor periodic maintenance services.

Natural Gas Semi Truck Engines

Fuel efficiency and environment-friendliness have become a major issue in the automotive industry. This has led to the emergency of heavy-duty semi truck engines relying on alternative fuels. Natural gas is a much more cost-effective alternative and more and more fleets are moving over to this fuel.

The method of fuel storage determines if the engine will use liquefied natural gas (LNG/propane) or compressed natural gas. A semi truck using propane or LNG as fuel will require a much larger tank to store the equivalent amount of energy compared to the one with a diesel engine.

Choosing the most reliable semi truck engine can significantly reduce your cost of operation and ownership. It can bring down your truck engine repair costs and boost your profitability. If you want to learn more about the best truck engines, the common engine issues, and other relevant concerns, feel free to contact TMS TruckMasters Inc. at (514) 631-0963 or write to us using this Online Form.