Why Are My Metalworking Fluids Going Bad?
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Why Are My Metalworking Fluids Going Bad?


castrol lubricants

Metalworking fluids are critical to the optimization and proper functioning of your equipment. Yet, approximately 70% of unplanned equipment shutdowns in the last three years by manufacturing companies were due to incorrect lubricant management.

Metalworking fluids can go bad for a number of reasons from an imbalance with the surfactants to a high chemical concentration.

To help you keep your machines running properly, here are two of the most common reasons why metalworking fluids go bad so you know what to watch out for.


You may not think of metalworking fluids as a place where microorganisms would choose to grow. Yet, microbial growth is one of the most common reasons why metalworking fluids (including synthetic lubricants) go bad and are no longer safe to use.

But how can you tell that your metalworking fluids have fallen victim to microbial growth? The smell.

Metalworking fluids with uncontrolled microbial growth will often smell rancid. It's important to discard your lubricants as soon as you notice this smell. This is because it's not just your machines and vehicles you need to worry about.

The microbial growth can actually cause adverse health effects in your employees and those who use the lubricant. That said, as soon as you notice a funky smell to your lubricants, discard them according to the instructions of the manufacturer.

Chemical reactions

While you might not expect microbial growth in your metalworking fluids, one thing you might expect is a chemical reaction. Both synthetic oils, semi-synthetic oils, and natural oils are susceptible to experiencing chemical reactions that make them no longer safe to use on your machines.

You can tell if your lubricants have experienced a chemical reaction by looking at the appearance of the fluid. Yet, the appearance depends on the type of fluids you're using.

For instance, synthetic oils are in good condition when they have a clear appearance. When the oil is no longer clear, it's not a good sign. Semi-synthetic lubricants and soluble oils are in good condition when they're milky in color.

The colors to be on the lookout for when you think your metalworking fluids may have experienced a chemical reaction include yellow, brown, gray, and black. These colors are all signs that your metalworking fluids need to be disposed of and replaced.

Where can I find Castrol lubricants?

Santie Wholesale Oil Company is your go-to place for Castrol lubricants, Tribol products, aeroshell grease, and specialty lubricants. If your Castrol lubricants have gone bad and show signs of rancidity, we can get you back on the right track. For more information on our transportation lubricants and metalworking fluids, contact Santie Wholesale Oil Company today.


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