Low oil pressure makes me nervous

Just for info, there is a reason for this.... full synthetics have a much more stable viscosity over a wide temp range. The lower weight viscosity number is tested at 100F, so down at room temp, the standard oil has thickened up while the full synthetic has not and so that is why it seems thin and runny when you pour it. That seemingly 'runny' synthetic will actually be MORE viscous at 200F than a 50W standard oil will be at that high temp.
I am aware of this thats why I spend close to 70bucks cdn for enough pure synthetic to do an oil change .
While we're at it why the $@#% does Mobil one come in a 4.4 litre jug when it takes 4.7 litres =5 quarts to do an oil change ?