[T3] ZDDP Calculator

[Brent Bottolfson]

I remember awhile back there was a ZDDP discussion.  I found this Excel 
spreadsheet that is kind of fun to play with.  It will calculate how 
much of various brands of additives to add to a certain amount of 
specified oil to bring ZDDP to a specified limit.

The original used liters, so I converted it to quarts.  I also added 
Rotella 15W40 as the oil, and removed the password worksheet 
protection.  It's pretty easy to use.

My modified version (File > Download to save it):
https://docs.google.com/open?id=0Bzw-LEVcclwebk1PTWM0bEdOb3c

Original from this page:
http://www.westfalia.gomez-perales.com/Documents.html

-Brent