Clutch life is tied to wear, so if the clutch is not slipping, it is not wearing. Starting the load in the lowest gear possible is...

If specifying steel wheels, on steer, lift and or drive axles, might ask the OEM (Original Equipment Manufacturer) if they have an option...

Remember the power divider function? On a set of two or three drive axles the incoming power is most often split in half going into the...

Charge Air Coolers are used to improve engine efficiency by increasing intake air density from the turbo. This increase of air density...

Have you ever looked at a torque curve? Its quite amazing what it tells us about the engine performance. If you have never seen one, here...

Every fleet owner is excited about reduced maintenance. A responsible service manager understands that this does not mean you can turn a...

Axle ratings are posted on the door label. These values represent the maximum capacity for the axle, based upon the lowest rating of the...

Trailer angle dip refers to the point when the trailer top corner hits the top of the sleeper. To assist with envisioning this, think of...

It is important to have a sicker in the cab door jamb that indicates this vehicle complies with California and U.S. emissions as opposed...

Have you always wondered if buying premix 50/50 antifreeze is a good idea as compared to purchasing concentrate and mixing yourself? The...

Engine fans are key to proper cooling. They work by pulling a tremendous amount of air over the fins in the radiator. Most engines today...

Most all systems include a pickup tube which pulls fuel from near the bottom of the tank, using a ½” to ¾” line connected through the top...

Ever dust an engine? Can you over change the element? When is the proper time to replace? Many maintenance facilities change air...

Trailer gap is measured from the nose of the trailer to the back panel of the sleeper. Sleeper extenders are not a consideration for the...

Most tractors today come equipped with an Automatic Traction Control (ATC) system and the functionality is optional on most all of...

The Federal Government has required most tractors to have an Antilock Brake System (ABS) since March of 1997. The legislation extended...

FMCSA 49 CFR § 393.67 - Liquid fuel tanks. Fuel tanks, 25 gallons or more, are required to meet FMCSS standards and indicate so on the...

These terms refer to the acceptable overload value of the steer, drive axles and respective suspensions temporarily encountered when lift...

ESC/ESP (Electronic Stability Control/Electronic Stability Program) are essentially the same product, the particular name depends on the...

The SAE J560 (black or green) plug has been used since 1951 to power the trailer functions: Ground, Side Marker Lights, Left Turn, Brake,...