North Idaho Wolfman said:
#1 Why do you need to remove or re-torque the oil pan bolts in the first place?
#2 It really wouldn't matter what the oil pan is made of,
as the bolts don't thread into the oil pan they thread into a steel block, and you're more then likely going to crack the pan or break a bolt before you strip out the steel threads.
#3 It takes about 1/2 a second or less for oil to get to the bearings, usually happens way before it will ever fire off, these motors do not drain the oil back into the pan when they are shut off and the system never is dry not even on an oil change.
#4 A block heater is a much better setup as it heats every component in the system, in the inverse of the cooling systems job. Heating the oil does nothing for the actual wear points of the components.
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#1 I don't. Why would you ask this?
#2 If the oil pan is aluminum, which bolt(s) thread into the pan? Take a minute to think about it, you'll figure it out.
#3 Not true. I can actually hear how long it takes from the sound of the engine. On the really cold days it takes a good 15 seconds to smooth out and quiet down. This can't be a good thing but maybe it's minor in the grand scheme of things.
Maybe it's too early in the morning for me, or not enough coffee.
GamblerAcres, in your original post you asked, "If so, do I need to be worried about stripping the threads with too much torque?" Did it occur to you the answer NIW gave was in response to THAT question?
Statement #2, Reread NIW's response. He stated the bolts thread into the steel block. I highlighted it in red to make it obvious.
Statement #3, the noise you're referring to isn't related to oil pressure. It has to do with compression ignition engine, injector timing and heat. Diesel clatter is caused by ignition lag, which occurs between the start of injection and the start of ignition. And more pronounced when engine is cold.
I do believe in your Work Shop Manual there is a page showing torque specs. for various bolts. Post #12 that Bruce posted will cover your concerns, I think, if you don't have a WSM.