Millers do oil analysis but I found it poor compared to Blackstone labs in the US. Millers came back with a very basic report saying everything was fine. I asked them about fuel content and they said oh ok we only do that if someone asks for it, 1.2% then. Uh ok.
Blackstone IIRC gives the full spectrum in their report.
Whether there is any material difference between how they actualy conduct their tests I don't know, but personally prefer Blackstone.
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