Yup we all agree to disagree and that's fine. What's your warm-up routine? I start my car and go. I stay away from the rev limiter when cold and that's it - just common sense. And I do 10k OCI using TWS and before covid used to daily drive my car including midwest winters. Are you still using 5w30? I wouldn't do the same but there's evidence that 10cst means little.I for one will do a proper warm up, regular 3000k oil changes and enjoy may car the way it was meant to be driven and change my rod bearings. As for the oil temp it is regulated and the viscosity difference will have little effect when the oil is hot as Falco points out.