<VV> Oil... Put the ZDDP Back In

[Mikeamauro at aol.com]

Like many others, I'm becoming concerned with the minimization of ZDDP  
levels in the newer oils. Even though I use Mobil-1 15W 50, exclusively in all  my 
Corvairs, and that particular product (per the manufacturer) "...Provides  
extra anti-wear additive for older vehicles...", recent data I've seen shows  
ZDDP levels in all road-use oils (including all the Mobil-1 oils)  is going down, 
down, down. 
 
Accordingly, I've been doing a bit of research, with the goal being to find  
a suitable additive to put the ZDDP back into my oil of choice... in this 
case,  Mobil-1. So far I've found:
 
*** The EOS product now available through AC Delco appears to be not  
intended as a continual use crankcase oil supplement.
 
*** STP Oil Treatment (in the red bottle) contains ZDDP, but likely not  
enough, nor in proper zinc-to-phosphorus ratio. 
 
*** CD2 High Perf Oil Boost might be better... still looking for solid  data.
 
*** Valvoline SynPower Oil Treatment seems to have higher ADDP numbers  than 
STP, and in the correct Z:P ratio... this one seems to have merit, and  
Valvoline is not a "Snake Oil" marketer.
 
*** ZDDPLUS, a fairly new product might be just what I'm looking for;  it is 
a concentrated ZDDP formulation, where, according to the maker, one  2-ounce 
bottle is sufficient to treat a 5-quart oil change. I've got more  research to 
do on this one before I risk dumping it in any of my Vairs.  Below is a link 
to a vintage car enthusiast site where the members are  carrying on a 
conversation about ZDDP as wee as the ZDDPLUS product.
 
http://www.turbobuick.com/forums/general-turbo-buick-tech/226565-oil-zddp-supp
lement.html
 
http://forums.noria.com/eve/forums/a/tpc/f/616604995/m/9231082891
 
 I've sent for additional testing and product information on ZDDPLUS,  and 
will share what I find.
 
Has anyone else been doing similar research on ZDDP-containing  products?
 
Mike Mauro



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