https://mobiloil.com/~/media/amer/us...pecs-guide.pdf
4T still has 1000 ppm for phosphorus, 1200 for zinc.
I notice a lot of the high mileage formulas have reduced zinc/phosphorus compounds. I wonder if the oil engineers have replaced ZDDP with another, more environmentally friendly compound that accomplishes the same goal.
I am not worried about the reduction in ZDDP.
Another notice: Mobil 1 now has a OW-16 formula for advanced fuel economy.. That is incredible. My pee is thicker, and I drink lots of water.