Hi Skkm, I would think it has a lot to do with what type of oil you are using.
If you are using the thicker mono-grade oils... W100 (sae50) or W120 (sae60), then these will stay thicker until reaching working temperature.
The Multi-grade sae 10-50 has the properties of an sae 10 at low temperature, and so is more suitable for cold starts. It then has the same properties of an sae50 at working temperatures.
Please consult your handbook before making any changes to the type of oil used.