Oil filter inspection can show evidence of internal parts that are starting to fail. when inspecting a filter look for metal dirt or clutch material. This is an important part of preventive maintenance and diagnosing engine transmission hydraulic issues. 

Oil sampling is an important part of preventive maintenance. Sampling the oil will check for any contaminants such as coolant, dirt, and diesel. It will also show if there is an abnormal amount of metal in the oil. Establishing a consistent oil sampling over the life of the machine and understanding the trends will help eliminate complete rebuilds, costly repairs

and downtime.