race track cautions

Will drive my 07 Cayman for the first time March 31 on NOLA's 1.8 mile loop open track day and  have read  about Cayman engine failures due to high g forces limitting oil engine lubrication.  Is this a real worry ??  I plan to push hard (got some new Michelin Sports) and have scheduled five 20 minute runs.  What other sensible worries/cautions should this newbie have ??