From the article below-
"We spend a lot of time talking to customers about the importance of lubricant cleanliness. It seems we cannot emphasize enough the measures you can and should take to reduce the risk of particle contamination to protect equipment.
Apparently, our message is getting through – so much so, in fact, that we hear this type of request from customers all the time: “Okay, I want my new or in-service oil filtered to five microns.”
What’s encouraging about this statement is that the customer clearly recognizes the need for clean filtered oil. However, it’s also a prime example of a customer not fully understanding filtration and cleanliness. Literally removing all particles larger than five microns would be very difficult and very expensive, and perhaps not even possible based on the formulation of the lubricant."
5 micron filtering Chevron
"We spend a lot of time talking to customers about the importance of lubricant cleanliness. It seems we cannot emphasize enough the measures you can and should take to reduce the risk of particle contamination to protect equipment.
Apparently, our message is getting through – so much so, in fact, that we hear this type of request from customers all the time: “Okay, I want my new or in-service oil filtered to five microns.”
What’s encouraging about this statement is that the customer clearly recognizes the need for clean filtered oil. However, it’s also a prime example of a customer not fully understanding filtration and cleanliness. Literally removing all particles larger than five microns would be very difficult and very expensive, and perhaps not even possible based on the formulation of the lubricant."
5 micron filtering Chevron