Regarding 5w30 oil viscosity?

5w30 oil would start/crank at the 5 viscosity index, during the first 15/20 minutes, as the heat activated viscosity modifiers transform the viscosity index to 30 at the full operating temp, does the engine essentially operate at progressively higher viscosity indexes until it reaches the 30 viscosity index, ie does the oil work its way from 5 to 6 to 7 to 8 etc. etc. until it reaches the designed 30 viscosity index, said another way, would the 5w30 oil be ';transformed lenearly'; beginning at a viscosity index of 5 and ending at a viscosity index of 30, and if this is true it would mean that a lot of people are doing a lot of driving on oil that has not been totally transformed to it full viscosity index? a mechanical engineer i know here in san antonio used to batch test the synthetic oil used by southwest airlines planes and he knows a lot about oil and he really tried to answer but could not. appologize if confusing, thanksRegarding 5w30 oil viscosity?
You answer your own question. Regarding 5w30 oil viscosity?
yes and no and what the
this is a statement of your opinion and or knowledge.. there is no question that you have not answered yourself..