True, but I'm speaking from slider cam experience where we can wear out a cam in 30K miles on the Lima engine with low zinc oils. Put a damper on it if you will but the 2.3 community (turboford.org) has a lot of proof for zinc saving mid 80's turbo engines from premature wear.

Yes, it is different from the cossie direct bucket action, but I'd like to point out that if you are going to be anal about your oil, select one that suits the motors, not what numbers are on it or if that fancy rally car has stickers on it advertising the latest blend.