The answer to a question like this might have bias due to a vested interest in promoting specific hardware for sale. You will probably get the best answer from someone in a lab who uses both technologies. And even then, it may depend on what kind of contaminates your are looking for with the analysis.
Perhaps you would learn more by using a search engine for oil analysis. Good luck with your effort!
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A great troubleshooting tip...."When you eliminate the impossible, whatever remains, however improbable, must be the truth." Sir Arthur Conan Doyle