8 min read
Is New Oil Clean? The Truth About Oil Contamination and How to Handle It
By Scott Howard on Mon, Sep. 08, 2025
Topics: contamination new oil cleanoil oil handling best practices hydraulic oil cleanliness
1 min read
Hy-Pro Vac-U-Dry Vacuum Dehydrator (VUD) Explainer Video
By Hy-Pro Marketing on Tue, Jul. 26, 2022
Contamination is Complicated; Removing it is Easy
Check out our latest product explainer video on Hy-Pro's VUD
The optimized balance between heat, vacuum, process design, and an easy, user-friendly operating system for removal of water and particulate from hydraulic and high viscosity lubricating oils. Equipped with generously sized, high-efficiency filtration, the VUD is the ultimate oil purifier. Keeping fluids clean and dry extends component and bearing life, increases productivity, minimizes downtime, and extends useful fluid life. The VUD is ideal for removing all forms of water, including free, emulsified, and dissolved water and gas from hydraulic and lubricating oils.
Topics: contamination fluid cleanliness vacuum dehydration vacuum dehydrator fluid contamination VUD cutdirtcutcosts hypro
4 min read
Four Ways Outside Contaminants Enter Your System
By Scott Howard on Thu, Apr. 15, 2021
Four Ways Outside Contaminants Enter your System
As an equipment owner or manager, the last thing we want to find in our system is contamination. After all, contamination means loss of efficiency or even downtime, which ultimately costs time and money. Contamination somehow always sneaks its way into our systems. So, how does contamination get in our systems and what are we supposed to do about it?
Topics: contamination oil analysis breathers
1 min read
Hy-Pro's Product Spotlight: Compact Offline Filter (COF)
By Hy-Pro Marketing on Thu, Apr. 01, 2021
Hy-Pro's Compact Offline Filter
Our newest and smallest unit yet, the Compact Offline Filter is able to fit where no other filtration equipment can. Ideal for smaller systems or where a larger offline system wouldn't fit, this solution can be permanently installed or made portable for ease of use.
Topics: hydraulic fluid contamination dirt Water Contamination hydraulic filters hydraulic and lubrication filter types Gearbox filtration new oil micro-dieseling fluid samples filtration oil analysis hydraulic pump filters hydraulic valve FSL liquid conditioning station duplex low-pressure oxidation Noria NSD hydraulic cellulose media compressor Reliable Plant filter comparison lube oil aluminum refinery conditioning turbine oil glass media
3 min read
Getting to Know Demulsibility
By Hy-Pro Marketing on Thu, Mar. 25, 2021
Demulsibility
What is Demulsibility?
Demulsibility is the ability of oil to separate from water. Oil and water naturally separate because like molecules attract each other. Oil sticks with oil, water sticks with water. Oil is "hydrophobic", or "afraid of water," which is a benefit when it comes to fluids like turbine oil.
Topics: varnish in hydraulic oil varnish in turbine oil contamination water in oil dirt Phosphate Ester diesel engine maintenance steel mills vacuum dehydration rolling mill lubricating oil filter housing sizing micro-dieseling thermal event ISO 4406 vacuum dehydrator fluid samples oil analysis metal analysis paper mill hydraulic pump samples COD duplex low-pressure gearbox contaminination hydraulic duplex high-pressure cellulose media filter elements filter comparison aluminum refinery lab
6 min read
What to Look for in a Dissolved Metal Analysis
By Jennifer Yeadon on Thu, Mar. 08, 2018
Oil can be high maintenance. It’s not something you just dump in your system and forget about. You have to monitor it, manage it and oversee it. Just letting oil cycle through your system without routinely testing it is a sure ticket to equipment damage.
Topics: contamination oil analysis metal analysis
3 min read
Breathers: An Essential Part of Total System Cleanliness
By Hy-Pro Marketing on Wed, Feb. 21, 2018
Controlling the contaminant flow of your hydraulic, lubricant or fuel reservoirs is one of the simplest goals in achieving Total Systems Cleanliness.
Topics: contamination total systems cleanliness breathers
4 min read
Parsing Filter Media and Filter Element Types
By Hy-Pro Marketing on Thu, Feb. 01, 2018
In the fascinating and fundamental field that is industrial fluid filtration, there exist many types of filter elements and many different types of media. In this article, we will briefly cover filter elements and the most common types of media they're made up of. The medias featured below include: cellulose, glass, wire mesh and water removal, coalesce and resin.
Topics: contamination filtration filter elements
2 min read
How Clean is New Oil? Part 2
By Hy-Pro Marketing on Mon, Apr. 15, 2013
Previously, we discussed how new oil picks up contamination on its way to your facility. Let's take a look at a three more reasons your new oil continues to be contaminated as it reaches your distributor.
Topics: contamination new oil liquid conditioning station LCS
2 min read
How Clean is New Oil? Part 1
By Hy-Pro Marketing on Tue, Apr. 09, 2013

Lubricants and hydraulic oil have to go a long way to make it into your system, which means there's a high potential for it to pick up particulate and water at every step along the way.
Around here at Hy-Pro, we cringe when we think about that process and how our customers put that oil into their machines. We want you to be aware of the state of the oil that you're using, so let's take a look at three reasons why new oil does not mean CLEAN oil.