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I drive it like an old man until WELL after the orange LEDs suggest it is up to operating temp - never exceeding 3k RPM. Until it hits the mid-way mark on the oil temp gauge.

Sorry, I should have prefaced this thread saying trolls need not apply. I welcome empirical feedback, based on real-world testing/data. In previous winters I have experienced a very "rattly" cold-start at cold temps - I would like to isolated whether this is because of an oil viscosity issue or...

With the impending arctic cold air coming, I am wondering how cold would be too cold to cold start my E39 M5 running Liqui-Moly 10W-60? I am contemplating switching to Mobil 1 0W-40 that I run in the non-M BMWs for the winter, but given that we'll be back to the 70s within a week, not sure the...

Thanks for the replies. I bought an oil pressure tester from Harbor Freight and removed the sending unit, but unfortunately this kit does not have the correct adapter for this engine. So I was unable to verify. I'm not convinced that the problem lies with the pressure sending unit though...

2005 Yukon XL Denali 6.0 with 234,000 miles. I'm having an intermittent low oil pressure problem with my vehicle and I'm not sure where the problem is at. Sometimes the oil pressure is good at 40 PSI or so at idle. But sometimes it drops to 5 PSI or so and the low oil pressure warning comes on...