Wolf's Head SD 10W/40 oil is unusual in that it contains copper - 84 ppm of it. This sample also contains 104 ppm boron, just 12 ppm calcium, 722 ppm magnesium, 848 ppm phosphorus, and 927 ppm zinc. Wolf's Head ATF uses just 15 boron, 56 ppm magnesium, 336 phosphorus, and 256 ppm zinc.