Alisyn Prodrive.
Manufactured by Aerospace Lubricants. One of the first to manufacture a Zero weight racing oil. The spec sheet is posted on the website.
http://www.aerospacelubricants.com
search Prodrive 21.
It is used by several NASCAR teams, IRL teams, SCCA, IMSA, etc etc. Learned about if from a friend that was an engineer on a Cart/Champcar team.
Darren