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My short response is that all of this has been covered on Renntech. I have the 986 and 996 shop manuals. There are errors in both manuals.
You do not torque a spark plug to 22 lbs. then go back and torque it another 2 lbs. You do not torque it 24 lbs in one shot This is an error in the Boxster shop manual when it says 22 plus 2. A smiple printing/translation error. This error is not in the 996 manual. It is 22 plus or minus 2.
Another example is the size of the wrench to remove the belt. It is 24 mm on the 986 and 996. I have changed the belt on both. The Boxster shop manual says 24 mm, but the 996 manuals says 27 mm. A mistake in the 996 manual.
Porsche issue a TSB in 1994 that says not to use anti-seize. A copy of this bulletin is on Renntech. The 986/996 did not exist in 1994. But until Porsche issues another bulletin on anti-seize the mechanics are taught to follow the old.
Porsche needs to outsource its publications like other car companies. They cannot not even spell Boxster correctly on the 2001 tech intro booklet.
All of this is from my memory, so don't quote me.
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