Lucas Response To Zinc Additive

It depends a lot on how the customer interprets the statements I would think....in the current lucas technical data catalog, theres one line in the description that says, "It is excellent for flat tappet camshafts during break in OR as an additive to any motor oil to prevent premature wear" thanks to this thread its easier to put some research behind it rather than assume "Hey lets throw the whole bottle in! It cant hurt!!!" Yea im guilty...:oops: Oh and from this tech article here: http://speedtalk.com/forum/viewtopic.php?t=30483 id feel pretty confident to say that MOST current API SN rated oils that are not specifically marketed as racing oil, older vehicle oil, or otherwise, are generally around 800ppm zinc, or 0.08%. So the awesome explanation and breakdown of Slant Six Dan is still valid to use in a real world application.