Mobil-1, really? Hmm, will probably be way cheaper than the Hoppes' stuff I use.
But yeah, over-lubing is bad. Bro left his gun at my dad's overnight until we could get the permit to transfer it to him, dad decided to give it a "good cleaning." It was absolutely dripping oil, I helped him field strip it and we Gun Scrubber'd the whole thing, then six drops of oil on the important parts, same as I do with my M&P every time I shoot it.
Now, the Ruger is another matter. I hate needing a hammer to get my gun apart and back together, so it only gets broken down about once a month, but it's a tough hunk of steel anyway, and hard to screw up the action.