Not sure if this is something new but it looks like a couple somewhat higher zddp flat tappet formulations in there. Check out the straight 40 weight!

http://www.roushoil.com/products.html

I've posted links to this before, but maybe not everyone has seen it. Amsoil has some of the highest ppm zinc levels that I've seen. I use the new 5w-20 and 10w-30 Dominator synthetic oils. The numbers are listed below.

PPM seems to be the standard measurement used for comparisons. Don't know why they use %'s so don't know how to compare!

The entire bullitin is here: Amsoil high zinc/phosphorus formulations.
___________________________________________________________
AMSOIL Synthetic Motor Oils Phosphorus Zinc Level
Level (ppm) (ppm)

AMO 10W-40 Synthetic
Premium Protection Motor Oil 1265 1378

ARO 20W-50 Synthetic
Premium Protection Motor Oil 1266 1379

HDD Series 3000 Synthetic
5W-30 Heavy Duty Diesel Oil 1266 1379

AME 15W-40 Synthetic Heavy
Duty Diesel and Marine Motor Oil 1267 1377
___________________________________________________________
AMSOIL Synthetic Racing Oils Phosphorus Zinc Level
Level (ppm) (ppm)

RD20 Dominator Synthetic
Racing Oil 5W-20 1424 1575

RD30 Dominator Synthetic
Racing Oil 10W-30 1424 1575

RD50 Dominator Synthetic
Racing Oil 15W-50 1424 1575

AHR SAE 60 Synthetic Super
Heavy Weight Racing Oil 1265 1375

10,000 ppm = 1%