# Does every superfluid have a normal and a superfluid component?

After seeing the question Will a propeller work in a superfluid?, I remembered an old video by Alfred Leitner (1'50'' and 3'00'')where he experimentally shows that liquid Helium below the $\lambda$ point has two components, one superfluid with zero viscosity and the other normal with a small but non vanishing viscosity. So I have two questions (which might be related):

1. Does every superfluid have a normal and a superfluid component?
2. If the ratio between those components is temperature dependent (as one of the experiments on the video suggests) then does the normal component goes to zero as temperature goes to zero?

You can't say which is which. But the temperature is not $0$, so a certain fraction of them will be excited enough to be in a normal state. The fraction is temperature dependent, and goes to $0$ as the temperature goes to $0$.