Posted by MarkB_MI on February 15, 2014 at 02:59:13 from (75.219.67.184):
In Reply to: Zinc Content in Oil posted by DelMN on February 14, 2014 at 11:17:53:
I would be very dubious of information gleaned at random from the 'net. I'm sure you can find plenty of "proof" on the internet that the earth is flat and only 6000 years old, for example.
Your list shows one entry for "Mobil 1" in two different weights, yet Mobil 1 is a whole family of different products with different levels of ZDDP. Take a look at the chart at the link below, dated April 2013, and you can see that according to Mobil, there are over twenty Mobil 1 products whose zinc content ranges from 650 to 1850 parts per million. Now 650 ppm is pretty low, but it ain't zero. It rounds off to .1 percent, using the imprecise notation of your list. And if we go to Mobil 1 V-Twin 20-50 (readily available at most auto parts stores and Walmart), it would top your list at 1750 ppm (.18 percent).
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