What is the perfect oil viscosity and why?
We should invent an oil that did not thin under shear stress and was temperature independent. You would think that chemists would be working on this. The oil would not thicken after the engine was turned off. It would be the same at - 25 F and 250 F. On the race track and within a hot bearing it would not thin. It would be the perfect oil.
I would pick a viscosity of 5 cS for the average automobile. It would be thick enough to prevent wear in a hot bearing and thin enough to have the best flow rate. I wonder though if a thinner oil yet would be best for true racing situations to allow for additional flow and cooling.
aehaas
We should invent an oil that did not thin under shear stress and was temperature independent. You would think that chemists would be working on this. The oil would not thicken after the engine was turned off. It would be the same at - 25 F and 250 F. On the race track and within a hot bearing it would not thin. It would be the perfect oil.
I would pick a viscosity of 5 cS for the average automobile. It would be thick enough to prevent wear in a hot bearing and thin enough to have the best flow rate. I wonder though if a thinner oil yet would be best for true racing situations to allow for additional flow and cooling.
aehaas