Sure that a 650 hp motor is uncommon. I would not let it run 10 min at idle ... Why ? Just start it, drive gently for a few minutes, (under 2500rpm) and both the engine and gearbox will warm up ...
That´s what I'm doing with my 43 years old 2.7l Porsche engine, and hope to do soon with the gr4 Pantera !
Philippe
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