7 Tell-Tale Symptoms of a Failing or Bad Intake Manifold Gasket

A mechanic opening the hood of a large semi-truck

You might not know it, but intake manifold gaskets are a vital part of every diesel truck operation. This one-of-a-kind part acts as the connection point between the manifold and the engine block. The intake manifold gasket forms a seal between these two components. The gasket helps maintain proper engine performance. When it fails, engine […]

Engine Overhaul or Replace? How to Know When It’s Time to Do Each

A picture of an engine out of its chassis

Uh-oh. The check-engine light turned on. And the engine is jumping, sputtering, and smelling that funky gasoline smell again. This could mean you’re having issues with the engine in your vehicle. Fortunately, if you’re reading this, your engine might need a replacement or overhaul. What exactly is the difference between the two, though? And how […]

The Driver Vehicle Inspection Report (DVIR) and Form Made Simple

Smiling truck mechanic pointing to a clipboard with a customer looking at the clipboard and smiling

Fleet managers and carriers have different responsibilities. That’s why they might not always see eye to eye. While they may not always agree on the best way to use these reports, they certainly can both agree on one thing: the driver vehicle inspection report (DVIR) is crucial for running a safe, productive fleet. For all […]

Drivers: Must-Know Warning Signs That Your Transmission Has Problems

Mechanic opening hood on large semi truck

It’s late at night. You’re driving on the interstate with a cup of your favorite beverage when you start to feel a lurch. Your engine’s been doing that an awful lot lately. I know I didn’t plow through a patch of ice just now, because it’s the middle of July, you might be thinking. Why […]

What’s Causing My Truck To Leak Oil (Reasons, Effects, and Fixes)?

mechanic looking at belly of vehicle

Your handy truck is emitting a funky smell. It’ll go away, though, right? Is it time to bring it to the shop?  If you’ve ever asked or thought of any of these questions, your truck is likely showing signs of a classic oil leak. While you might want to write off the small puddle under […]

What to Expect for Your Annual DOT Inspection (and How to Pass It)

Three semi trucks parked on shoulder of the road

The dreaded DOT inspection: it’s an annual affair for an inspector — and a nail-biter for commercial vehicle drivers. Don’t sweat it. Certified Fleet’s got your back. If you’re wondering about the 5 W’s (who, what, where, when, and why) of DOT inspections — and how to pass this inspection with flying colors — come […]

Corrective Maintenance vs Preventive Maintenance

Diesel mechanic

When it comes to managing a fleet there are two strategies that come to mind, corrective maintenance and preventive maintenance. Approaching your fleet with the right maintenance strategy is essential. Not only will it ensure that your vehicles are safe to operate, but it will help raise your fleet’s productivity and bring value to your […]