Most of the time
oil consumption on a new motor is caused by a leaking intake manifold gasket or damaged
oil seals when they installed the springs. I replaced the intake manifold 3 times using different types of gaskets until it stopped leaking. I used a plain SCE gasket with the hylomar sealer that was made for use on Rolls Royce aircraft engines.. The stuff is great, but no one has ever herd of it. I won't use anything else. I even used it on my valve cover gaskets. You can take them off anf put them back without additional sealer. I tried Nitro seal, printo seal and Victor Reinz they all leaked! The gaskets were hard as bricks with very little compression. The SCE gaskets were softer and would compress a little better making a tighter seal. The only thing I had to do was trim them to fit the intake ports.