If the engine needs to see 500 CFM to see 10 PSI of manifold pressure, and your alter your blower, but leave the rest of the engine exactly the same, it stands to reason that an increase of volumetric efficiency would result in increased manifold pressure, and vice versa.
My blower case after a quick ten minute drive with a couple wot runs ended up around 150-160* F
Heres some results from the same day going from GM supercharger fluid to mobil 0w-20. Never did see a significant difference.
ECT 199 197 snout 171 165 case 160 150 core 147 IC in 127 108 IC out 131 115 FMHE 125 Ambient 89 85