http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2403474

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

http://www.circletrack.com/enginetech/ctrp_0807_flat_tappet_cam_lubricants/viewall.html

And a couple dozen similar sites found in about two minutes on the
googles. <flat tappet zddp>

It does appear to be a real problem. I've addressed it by running
either Mobil 1 Truck oil or Rotella T synthetic in all things Vanagon.

The other Jim

On Dec 3, 2011, at 7:45 AM, James Felder wrote:

> Dennis, I agree with you that when it comes to things automotive,
> most of what circulates among the general public is just folklore.
> In this case, the owners of a small garage--but one that sees
> thousands of VWs each year--passed along their observations or
> something that appeared in a tech bulletin or they heard from a
> service rep. I don't know, I was just passing it along myself. Not
> that it should be blindly followed, but since it comes from a better
> source than, say, the guy behind the counter at a FLAPS, or should
> be considered.