  In this paper we make steps in a new direction by considering fluids with EoS
of more general form $F(\rho,P)=0$. It is thought that there should be
interaction between cosmic fluids, but this assumption for this stage carries
only phenomenological character opening a room for different kind of
manipulations. In this article we will consider a modification of an
interaction $Q$, where we accept that interaction parameter $b_{1}$ (order of
unity) in $Q=3Hb_{1}\rho$ is time dependent and presented as a linear function
of Hubble parameter $H$ of the form $b_{0}+btH$, where $b$ and $b_{0}$ are
constants. We consider two different models include modified Chaplygin gas and
palotropic gas which have bulk viscosity. Then, we investigate problem
numerically and analyze behavior of different cosmological parameters
concerning to fluids and behavior of Universe.
