Only a little bit of oil will come out because the engine oil pan is located much lower than the left cover. When you remove the cover, be sure to clean all the oil from the mating surface (both the engine and the new cover just to be safe) before you apply the sealant.
I don't remember the torque amount, but tighten them in a criss-cross pattern.
I don't remember the torque amount, but tighten them in a criss-cross pattern.