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Oil works best at their operation temperature. The visconsity of it and density will change. Engine and mostly all movable mechanical parts need to be covered with a thin film of oil to last, and efficiently run
Older or newer car are both the same...they are made with metal....use your kids school physic laws here...
For that said. The best thing to do is to let your car warm up to normal operating temp, then give it 1-2 minutes more.
The only thing that newer technology does to modern car is the oil system. It can deliver oil pretty quick to most parts of the engine when turn key, but the property of metal and temperature will never change
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