I'll be away for 5 weeks, and was just wondering if there are any special preparations required for the car? Do I leave it will a full tank of fuel? Near empty tank? Increase the tyre pressures? Disconnect the battery? The car is new-ish being 2 months old, so I guess the battery could stand the time? There will be no-one to drive it around for me while I'm gone, and this is my first car requiring such treatment. Any advice welcomed.