Synthetic or Dino?

[VStarRider]

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.

[F6Dave]

https://mobiloil.com/~/media/amer/us...pecs-guide.pdf

I wonder if the oil engineers have replaced ZDDP with another, more environmentally friendly compound that accomplishes the same goal.

From what I've read, Borates are showing up as a replacement for ZDDP.

BTW, I kept a copy of that Mobil 1 comparison data sheet from early 2016. I compared it to the current version to see which oils had their ZDDP content reduced.