**Compressor Oil - What Color Should It Be?**
Published by Filter Element Store on Oct 04, 2023
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Have you ever asked yourself, “What color should my compressor oil be?†It might seem like a simple question, but the answer can actually tell you a lot about the condition of your air compressor. When new, compressor oil is typically a light yellow or amber color and should be clear. Monitoring its color over time is an essential part of maintenance.
Recently, we received a call from a customer who was confused about the color of our PAG 46 compressor oil. This particular grade is a popular replacement for brands like Ultra Coolant and is one of our best-selling products. As shown in the image they sent, our PAG 46 oil has a clear, yellowish to amber tint — just as it should.
However, the customer was concerned because the oil in their compressor was completely black. They had recently had a service technician replace the oil, but the sample they tested was extremely dark. We reached out and got this response:
> "They had a service guy come out Friday and confirmed that the coolant should be light in color. I got a picture of the OEM coolant they put in there. He did grab the old used coolant. He should have known better. See the picture of the old oil he put in."
As you can see from the image, the oil they were using was heavily contaminated and had been reused. This kind of mistake can lead to serious damage to your compressor over time.
It's important to regularly check your compressor oil and follow a preventive maintenance schedule. If the oil becomes significantly darker than when it was new, or if it smells burnt, it’s probably time for a change. Also, if the oil looks milky or cloudy, that could indicate water or coolant contamination in your system.
One way to save money and avoid issues like this is to use high-quality aftermarket compressor oil, such as our Made in USA compressor oil. By doing it yourself, you can ensure that only fresh, clean oil is being used in your equipment.
We sell top-quality aftermarket compressor oil and are not affiliated with any original equipment manufacturers or trademarks.
Last Modified: 04 October 2023
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