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On 6 May 2006 at 8:14, Russ Wolfe wrote: > As they are positioned in the head in relation to the oil supply. And, > they are further canted at an upward angle decreasing further, the > chance for oil to get into the guides. I always get confused about this, so I had to go find a picture of a head to verify that you were right: Oil has to flow uphill along the valve stem in order to get into the valve guide. Nevertheless, I still think it's likely that the "seals" are there to limit the amount of oil which gets carried "uphill" into the valve guide by the motion of the valve. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~