Originally Posted by Oldtimer
I am assuming the engine is not blowing white smoke, just consuming oil.
Before you do anything, check the crankcase vacuum. The gauge has a cone shaped tip that goes into the dip stick tube. You should see a -10 psi. If he needle bounces back and forth the problem is head gaskets.
Replace the head gaskets and head bolts.
Normal crankcase vacuum on a Command twin is 2psi...