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The smoke emission under the conditions described should be due to the valve seals and replacement can be done without remove the head but the cam carriers have to be removed and for the rear bank, it is not going to be easy.
You would need special tools and regulated compress air and a mechani with patience to perform the job.
For oil to get to the plug seals, the most common cause would be bad plug seals under the valve cover. Replacing them should solve the problem.
Sea foam might help reduce the oil consumption and you can give it a try.
Loss of antifreeze indicates a leakage somewhere. If it is not noticeable, a pressure and leak down test should be able to locate the source. Most common areas would be hose joints.
Sunday, October 31st, 2010 AT 9:52 AM