You’re taking on a lot of responsibilities when you buy a new diesel truck. As tough as a truck may seem, neglecting to care for it ensures it’ll break down, fall apart, or otherwise fail you when you need it most. But taking care of your truck isn’t that big of a hassle. Just keep in mind these four mistakes to avoid with your new diesel truck.

Forgetting To Change the Oil

Want to know one of the easiest ways to destroy an engine? Don’t change the oil. Dirty or depleted oil puts extra stress on the engine by increasing friction and causing build-up. Old oil loses viscosity, so fresh oil is a must. Regular oil and oil filter changes extend the life of your engine, so be sure to schedule periodic service every 3,000 miles (or 6,000 miles if you use synthetic oil). Check the owner’s manual or consult your mechanic about the specifics. You’ll notice the difference in performance if you do forget to change the oil…but not for long. Eventually, the engine will just stop, forever. Don’t let it happen!

Not Warming Up Your Engine

Engines can get fussy when it gets cold. Make sure you warm up your engine before you rev it. Warming it up allows the fuel to circulate through the engine and encourages lubrication. Yes, another case for minding the oil. As the engine runs the oil lubricates the cylinders. Starting and revving doesn’t give it a chance to lubricate, which punishes the engine and adds wear and tear that can lead to a breakdown down the road—and keep the fuel tank topped off!

Watch for Signals

Your truck and engine are high-tech vehicles that can practically think for themselves, whether you own a 7.31 Powerstroke crate engine or another brand. What’s more, they can communicate any potential issues before they become serious problems through a series of signal lights. Watch out, especially for the engine light. An activated engine light it could mean basic maintenance or that some crucial part is about to fail. Take it in to see your mechanic immediately, or if you’re the DIY type, pop the hood and see for yourself. Other signals can alert you to leaks, faulty connections, reduced tire pressure, and even low windshield fluid levels. It’s all important, so “listen” to whatever your truck is telling you.

Overworking It

Here’s the last of our four mistakes to avoid with your new diesel truck, and it’s a big one. Trucks are often working vehicles. It’s fair to expect a certain amount of power and torque from them, particularly when towing and hauling items. That said, don’t be a showoff. Regularly pushing a truck past its limits, or even briefly doing so, can cause costly damage. You’re hurting your truck when you tow past its limits, causing distress to the engine, the body, the chassis, and the towing apparatus itself. This damage can affect its performance and its lifting and towing ability. Know its limits, and it’ll last longer.