[DeTomaso] STP Oil Stabilizer?

[Charles McCall]

Dan Jones turned us onto a product designed to boost the ZDDP content in
motor oils to protect solid-lifter cams. 
 
It was called STP Oil Stabilizer. 
 
The link USED to be  <http://www.stp.com/oil_stabil.html>
http://www.stp.com/oil_stabil.html

The link is no longer valid, and the product no longer appears on their
webpage.
 
Was this stuff not everything it was cracked up to be and was removed from
the market? 
 
Is there a similar additive one can add to a solid lifter engine to help
protect it? 
 
Dan? Anyone?
 
Thanks!!

Charles McCall
1985 DeTomaso Pantera GT5-S #9375
"Raising Pantera Awareness across Europe"
http://members.aol.com/PanteraGT5S1985/