Waste of time if you ask me. That's why we created multiple viscosity oils. I don't put strait weight in my Duc.
Even a multiple viscosity oil such as my Mobil 1 synthetic 0 30 is too
thick at 40ºC /104ºF to lubricate your engine properly... your pump
builds pressure but not flow because pressure is inverse proportional
to flow... what is happening instead of lubricating your engine
properly the blow off valve just dumps the excess pressure...
If the Original Posters aim is long life and we agree that the most
wear happens at start up before warm up then based on test done by the
Oil Companies and Independent Test Labs idle your engine until the oil
is at the proper operating viscosity which is 100ºC / 212ºF water
temp... because during idle there is no stress on the critical engine
parts...
Every oil company list viscosity of their oil at 2 temps 40ºC / 104ºF
(room temp) and 100ºC / 212ºF (operating temp) Quote Mobil 1 viscosity
of 0 30 synthetic oil...
At 40ºC / 104ºF viscosity = 56.7
At 100ºC / 212ºF viscosity = 10.3
Compare that to the viscosity of straight weight 30
At 40ºC / 104ºF viscosity = 97
At 100ºC / 212ºF viscosity = 11.7
You can see what the problem with oil is... its too thick at room
temp and just right at operating temps... the lesson that should be learned is
idle the engine up to operating temp of 100ºC / 212ºF before selecting first
gear if you wish to properly lubricate your engine...