I could be wrong, but I think the SC's oiling system is self contained, and shouldn't effect engine oil at all.... at least, I cannot see where they tapped into the engine oil system on mine....
I would definitely check your intercooler coolant level and be nice to it on your way to the dealer....
I would think that this would fall under TRD warranty, and not so much your dealer....
I'm curious as to what they find, and what they change... the entire SC or just the intercooler....
Does you pump sound normal? Does the fluid ooze out with the ignition on/pump running? Or can you hear any air/gurgling coming from it when the pump is running?