I have a straight 50 mineral oil which currently has approx 800ppm Zinc and wish to increase this level to 1500ppm could one of you guys help with how much is required please to achieve the desired amount?
I have a ZDDP additive which contains the following data:
Density @ 20 Deg C : 1115
Viscosity @ 40 Deg C : 211
Viscosity @ 100 Deg C : 12.9
Zinc Characteristics by Weight : 8.0% Minimum / 9.0% Typical / 10.5% Maximum
The recommended treat rate is 0.5% to 2.1% by weight.
I would appreciate it if someone could assist in calculating how much additive I need to add to the Straight 50.
Extra Kudos for showing your workings
If any other info is required for the SAE50 or Additive please let me know!!