Sludge-forming oil oxidation occurs when oil reacts with oxygen. It occurs more rapidly at high temperatures and in the presence of water, acids, or catalysts such as copper. Today's modern engines run at higher temperatures and can contribute to oil oxidation and ultimately sludge formation. But how do you know?

Contamination is the biggest concern with using DEF and the source is usually related to storage or handling practices. This article outlines best practices for storing and handling DEF.

With the onset of cold weather and increased grain drying due to late planting, propane demand this fall may be higher than we have seen in recent years. Filling propane tanks during summer fill programs is highly recommended.