I had mine replaced not to long ago and they just toped off the amount of oil that was drained. They added about 5 quarts and charged me for it. Silly thing is, it was so close to my next oil change, had I known this beforehand, I would of had them change the oil filter and do a complete oil change. It's your call, but they will most likely just top off the oil that was drained durring the RSM replacement.
