as far as fuel level, i just found it here on the forum and passed along to them, it is in a thread about a special obd reader, something like scangauge or something? Bunch of PID in there, i don't know anything about those so i won't be of much help for that.
Just sending the request and info to
info@aimsports.com does the job, i usually go through Roger@aim or who ever is in charge to answer at info@aim