A few weeks ago now I replaced my LIM gaskets because oil was getting into my coolant (but not the other way around) and it went pretty smooth. Got the GM Aluminum gaskets in there right now and everything seems to have sealed nicely, at least on the outside. I've noticed I've had to top off the coolant twice now and there still seems to be some oily residue in there as well. I'm not sure if it's whatever was left after my less than adequate cooling system flush or if it's still doing it but I'm now more concerned about why it's consuming coolant. It didn't do that before I replaced the gasket and I did everything correctly, torque specs, mating surface cleanup, etc. What's the deal?