zinc in oil?

Here is some info from blackstone posted on a chevelle site (message dated 2/1/08 so it's current).

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(1200ppm-1400ppm) Zn & P is where we need to be for good protection when running an aftermarket flat tappet hyd or solid perf cam with elevated spring rates which is what many of us are running in oru SBC/BBC)

(KEY=Zn-ppm/P-ppm/Ca-ppm)

VALVOLINE NSL RACE -20W-50 - 1250/1000/890 (ALL 4 VALVOLINE OILS ARE CONVEN)

" " NSL RACE -10W-30 - 1000/750/880

" " VR1 RACE -20W-50 - 1040/840/1837

" " VR1 RACE -10W-40 - 1160/912/1650

BRAD PENN RACE - 20W-50 - 770/600/1112 (SYN BLEND)

CASTROL SYNTEC TRUCK & 4X4 15W-40 - 1240/990/1936 (SYN BELND)

CHEVRON DELO LE CJ 15W-40 - 1360/1115/3070 (CONVEN OIL)

SHELL ROTEALLA 30WT SINGLE GRADE -1215/1050/2350 (CONVEN OIL)

LUBRIPLATE GPO H/D 15W-40 - 1165/920/2550

STP 4 CYL OIL TREATMENT (RED) 459/329/268 (VISCOSITY WAS NOTED AS TOO THICK TO MEASURE IN TEST RPT.

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(original source: http://www.chevelles.com/forums/printthread.php?t=195620&pp=40&page=3)


I am not sure what this means for STP, looks pretty bad here, but there is mention of test issues so I'm not sure if the zinc # is accurate(?).