Lucas Response To Zinc Additive

Fstforward said
No. If you do the math, say one quart = 1 million parts, so one quart contains 1200ppm. Now multiply 5 quarts, that's 5 million "parts", and each quart contains 1200 parts, to times 5 =6000 parts/ but divided into 5 million, that still equals 1200ppm.

1=1200/1000000 = .0012 ratio Zinc to Oil
x5
5=6000/5000000 = .0012 ratio Zinc to Oil

FF

Right. The Lucas rep says add the whole bottle and you will end up with a 5200 level of Zinc. This means you will end up with 6000 (5200) /5000000 with 5 quarts or 1200 PPM per oil change assuming the oil you are using contains next to nothing zinc which it seems true for most oils today. Is that not what we are all after?