The motor oil program is a cornerstone of any maintenance routine, but today’s market offers so many products and best practices that it’s difficult t...

Motor oil isn’t usually a topic that school bus fleet operators spend much time discussing. But that might change soon, after new-and-improved l...

With the movement toward integration of chassis and body (and, in some cases, engines) in the school bus manufacturing industry, it should be no surpr...

In today’s advanced diesel engines, the cooling system stands at the center of attention. Studies have shown that four out of 10 engine problems are related to improper mixture of coolant and additives or inadequate cooling system maintenance.

First, determine how the bus will be used. Second, rate the importance of performance, fuel economy and serviceability. Third, consider affordability.

How do you choose from all the motor oils on the market? How do you even know you get what you're paying for?

The shape of things to come has already arrived. It's a box, more or less, and it contains enough computer wizardry to monitor a wide range of engine ...