  We present a comprehensive study of the molecular gas properties of 17 Type 2
quasars at $z <$ 0.2 from the Quasar Feedback Survey (L$_{[OIII]}$ >
$10^{42.1}$ $\rm ergs^{-1}$), selected by their high [OIII] luminosities and
displaying a large diversity of radio jet properties, but dominated by
LIRG-like galaxies. With these data, we are able to investigate the impact of
AGN and AGN feedback mechanisms on the global molecular interstellar medium.
Using APEX and ALMA ACA observations, we measure the total molecular gas
content using the CO(1-0) emission and homogeneously sample the CO spectral
line energy distributions (SLEDs), observing CO transitions (J$_{up}$ = 1, 2,
3, 6, 7). We observe high $r_{21}$ ratios (r$_{21}$ =
L'$_{CO(2-1)}$/L'$_{CO(1-0)}$) with a median $r_{21}$ = 1.06, similar to local
(U)LIRGs (with $r_{21}$ $\sim$ 1) and higher than normal star-forming galaxies
(with r$_{21}$ $\sim$ 0.65). Despite the high $r_{21}$ values, for the 7
targets with the required data we find low excitation in CO(6-5) & CO(7-6)
($r_{61}$ and $r_{62}$ < 0.6 in all but one target), unlike high redshift
quasars in the literature, which are far more luminous and show higher line
ratios. The ionised gas traced by [OIII] exhibit systematically higher
velocities than the molecular gas traced by CO. We conclude that any effects of
quasar feedback (e.g. via outflows and radio jets) do not have a significant
instantaneous impact on the global molecular gas content and excitation and we
suggest that it only occurs on more localised scales.
