We had the discussion on the steps a team takes to match the oil and fuel to the specific needs od the climate and track for a weekend.

AND just in time here is a good article from Shell Motorsport on what they do in the week leading up to the race.

Enjoy .......... http://www.shell.com/home/Framework?...k_Lab_Relaunch

Our prep used to consist of decanting Mobil1 into the sponsors bottles and filling up the jeryy-cans with AvGas