S•O•S Fluid Sampling & Analysis


S•O•S Fluid Sampling & Analysis

The Cat S•O•S™ Services Program is a mutual commitment to protect the performance and value built into your Cat equipment. The program combines the simple process of fluid sampling with state-of-the-art analysis and clear, easy-to-understand reporting via Cat S•O•S Web (from within My.Cat.Com). It creates not only optimsed machine performance, but also improved cost control. S•O•S allows you to see what is going on inside your machine and detect problems before they become serious.


Step 1 - Take a Sample

To start you need to buy a sampling kit and take a sample. You can buy kits over the phone (1300 881 064) or online via Parts.Cat.Com (PCC). For pricing and part numbers, click here.

Step 2 - Create MCC Account

Create an account on My.Cat.Com (MCC). MCC is a web-based hub that provides you with access to all your equipment information. It's also where you will access Cat S•O•S.

Step 3 - Send Sample to WesTrac

Use the pre-paid postage bag inside the kit (which will have the correct address on it) to mail your sample. While you wait for results, visit our Cat S•O•S training resources page.


Access sampling data on Cat SOS Web  

What is Cat SOS Web? 

Cat S•O•S (Services) Web is the S•O•S program's user-friendly web interface, which is accessed by logging into My.Cat.Com (MCC) - you must register for MCC first.

With Cat SOS Web you can view and analyse your fluid sample information online - anywhere, anytime and on any device.


We have a range of Cat SOS Web training resources available by clicking below. You'll find downloadable guides, videos and a recorded webinar.

What can I do on Cat SOS Web?
  • View & Print Reports
  • Conduct Data Analysis / Identify Trends
  • Print Sample Labels
  • Record Actions & Repairs
  • View Equipment History
  • Receive Expert Advice
  • Manage Assets (Adding, Deleting & Editing)
  • Manage Users

Why should you consider regular fluid sampling?

Maximum Reliability

The Cat S•O•S Services program provides you with an accurate account of the health of your engines, power generators and other major components. This knowledge allows you to schedule maintenance and oil changes more effectively while maintaining maximum reliability and increasing overall productivity.

The health of your equipment is determined by sampling and testing oil and coolant. Standard tests include wear rate analysis, oil cleanliness analysis, oil condition analysis and detection of fuel, water and glycol. Additional tests may be performed if needed.

Cut Costs

Effective preventative maintenance is estimated to be 3 to 5 times more cost-effective than unscheduled maintenance and repair. In many instances, S•O•S has detected the need to replace a small part, which has prevented the failure of a major component.

Surveys consistently show major benefits for users who rely on the Cat S•O•S Services program . A 10:1 payback ratio is common when comparing the amount saved on repair costs to the amount invested in S•O•S Services. This is conservative, especially when coupled with reduced downtime, greater productivity, and increased used machine value as the analysis identifies potential problems before they become catastrophic failures and cause unplanned downtime.

Expert Advice

Our state-of-the-art ISO 9001 certified in-house laboratory is staffed by specially Caterpillar trained technicians, experienced in Cat equipment. For you, this offers a major benefit compared to outsourcing from other external suppliers. WesTrac specialist technicians know exactly what metallurgical specifications were designed into each part and component.

Our team has over 50 years' experience and conducts more than 400,000 oil tests every year. If test results point to a potential problem, you will be provided with carefully outlined recommendations immediately (Available via Cat SOS Web).


How to take a fluid sample?

Our team has put together a guide that explains how to take a fluid sample for accurate results. It covers taking a sample using an oil valve probe and vacuum extraction. Download it by clicking below. If you'd like more tips, Caterpillar have also put together an instructional video that teaches the technique.

How to take a fluid sample
The characteristics

What is evaluated?

We evaluate more than 30 characteristics from each sample. This allows us to gain a comprehensive picture of the health of your engine, transmission, powertrain and other wearable components. From each sample, our team is able to evaluate contamination levels, corrosion levels and stability.
Fluid Sampling Characteristics
the analysis

What is detected and analysed?

  • 20+ wear metals & additives
  • Presence of water
  • Fuel dilution
  • Glycol concentration
  • Viscosity at 100c
  • Soot and sulfur compounds
  • Bacteria or sediment

And more.

Fluid Sampling Tests
let's do the work

Need a service?

Send a message to our Services Team and they'll be in touch to discuss your needs and get to work on a solution that suits your operation.

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