parts of a radiator pressure cap The lowly radiator pressure cap does more than you think.

There is no denying that on most engines valve adjustment is burdensome. Ray makes a compelling case on why it needs to be done though.

On the road to being a machinologist there will come a time when you need to teach yourself. In this episode, Ray explains how serial data from an engine management system can be a wealth of understan

The modern light-duty diesel needs to be tuned. Ray Bohacz tells you how!

Ray shares some head scratching problems that were rooted in an unlikely cause.

This week we look at parasitic losses inside a turbocharger and how to minimize them.

People, animals, and most crops are influenced by the weather conditions but what about engines?

Does auto racing equate to making better cars? Do high-yield farmers have an influence on nation-wide crop yields? Join Ray to hear his take on these topics and let him know yours.

Follow these simple steps to double the life of your braking systems.

Ray explains why you need to load-test all of your farm batteries.