What does SOS stand for?

Scheduled Oil Sampling (SOS) is a regular maintenance program developed by Caterpillar to monitor the overall condition of all equipment types. When it comes to durable, reliable equipment, Empire Fluids Lab is ready to help extend the life of your equipment even further.



SOS Services includes expert analysis for:


  •  Checking for wear and wear rate, condition, contamination, proper lubricant usage


  •  Checking for correct fluid usage, condition, adequate freeze/boil protection, contamination

Diesel Fuel

  • Checking for acceptable quality, microbial growth, contamination, appropriate usage


Fluids Lab Tech Working

In our oil analysis lab, our technicians are able to test a number of factors to gain a comprehensive picture of the health of your engine, transmission, powertrain and other wearable components.

Oil sampling is recommended regularly and can depend on the application, hours, use, etc. If you’re unsure of what “regularly” is for your equipment, just give us a call, and we’ll work with you to provide a recommendation that works for your equipment needs.




This article is one of a six part educational series that will give you the knowledge to protect your machinery investment with fluids analysis.

Next up:

What Type of Equipment Should I Test?



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