Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.
DOT 3 is what I always used. Since you don't know what someone might have in there to play it safe I would flush the system out completely with DOT 3. Then you know what's there.