<VV> oil, lifters, cams, etc...

[mark at noakes.com]

The following article came highly recommended to me by my GM automotive 
engineering and long time racing/hot rodding contact.  As usual, most 
issues are not super simple; while the ZDDP oil issue appears to be 
very real, there are also other contributing factors.

http://www.hotrod.com/techarticles/engine/flat_tappet_cam_tech/index.
html

Mark Noakes