On 7/19/12 5:58 PM, bfye at canyonville.net wrote: > Modern rotella is lacking in zddp > Sent via BlackBerry by AT&T I know. The calculator will tell you how much of any particular additive you need to bring it up to whatever ppm you specify (I made it 1500). I've been figuring out how much EOS or ZDDPlus I need to add with it.