Coolant systems require proper maintenance and care. Here are some signs to look for and guides for maintaining proper coolant flow for optimal performance.
![Coolant Glossary](https://penray.com/wp-content/uploads/2020/07/coolant-glossary-255x170.png)
Coolant Glossary
Antifreeze: A mixture of glycol and water (typically 50:50) with a corrosion inhibitor package. An appropriate mixture balances the need for maximum heat...
![Why Maintain Your Coolant](https://penray.com/wp-content/uploads/2020/07/Why-Maintain-Coolant-255x170.png)
Why Maintain Your Coolant
Using and maintaining a properly formulated coolant is one of the most important aspects of engine maintenance. 30% of engine breakdowns are a direct result...
![Poorly Treated Indications](https://penray.com/wp-content/uploads/2020/07/poorly-treated-indication-255x170.png)
Poorly Treated Indications
What happens if a diesel engine cooling system is NOT treated properly with chemicals? Corrosion of the steel and cast iron surfaces Hard water...
![Metal Corrosion](https://penray.com/wp-content/uploads/2020/07/corrosion-255x170.png)
Metal Corrosion
Corrosion is the natural tendency of metals to revert back to their ore form. Cast iron, for example, will form reddish-brown iron oxide (common rust)...
![Cavitation In Cooling Sytems](https://penray.com/wp-content/uploads/2020/07/Cavitation-in-Cooling-Systems-255x170.jpg)
Cavitation In Cooling Sytems
One of the most common and costly results of improper cooling system maintenance is the perforation of wet-sleeve cylinder liners. The perforation is caused...
![Scale Formation](https://penray.com/wp-content/uploads/2020/07/Head-Rust-1-255x170.jpg)
Scale Formation
A diesel engine generates enough heat to warm a seven-room house during the winter. It must shed some of this heat to operate efficiently and prevent...
![Preventing Cooling System Problems](https://penray.com/wp-content/uploads/2020/07/Preventing-Cooling-System-Problems-255x170.png)
Preventing Cooling System Problems
With the Penray Fill-For-Life Program Industry experts estimate that about 40% of engine downtime is caused by cooling system problems. Understanding...
![Coolant Charts](https://penray.com/wp-content/uploads/2020/07/Coolant-charts-255x170.jpg)
Coolant Charts
Penray recommends that all cooling system tests be performed using Penray’s Universal 3-Way Test Strips. Penray also recommends using Fleetcharge® or...
![Fill For Life Program](https://penray.com/wp-content/uploads/2020/07/Coolant-Faq-255x170.jpg)
Fill For Life Program
Q. WHAT IS A FILL-FOR-LIFE PROGRAM? A. FILL-FOR-LIFE is an extended service interval (ESI) coolant program. The coolant’s life is extended to correspond...