Troubleshooting | What could high copper in my engine oil sample mean?

[@LubricationExplained]

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[@majidalzahrani0]

I have this problem in a standby caterpillar 3516 engine that just had an overhaul last year, and first oil change!!

[@LubricationExplained]

Yeah very common in the engine oils.

[@carlosalbertocaamanojaraba211]

I've seen that an oil brand change (add pack change) can lead to pasivation again, even for old coolers. Why that happens?