I did a long post of here some years ago about all of the things you should do. The problem is that they are mainly based on what was best practice with much older vintage cars than these and different fuels, tyres, mechanicals, etc... etc.... I regularly :roll: lay my cars up for 6 months and I just do the following:
- clean them (make sure they are dry before storage)
- over inflate tyres by 2-4 PSI (stops flat spots), in 6 months time they will be around OEM PSI
- fuel to the brim
- fit an indoor breathable cover
- make sure there are pest control traps around the car
- put on a battery conditioner or disconnect the battery
- lock the car
Other things would depend on the location eg security and how damp it is eg some say you should close interior vents, some say you should open them :roll: , some say you should leave a window a little open, some say you should not :roll: , some say you should put dehumdifier gel inside.......bottom line is if the storage location is on the damp side them ensure the interior of the car is vented eg to me leave vents open / window ajar but security is then a consideration. Personally I just leave vents open and close the car up but I store in a secure vented (ie not damp) location.
Flat spots / fuel stabilizers etc.... are just not as big an issue for 6 months storage with modern products IMHO
ps I've just laid up my boxster in storage today, cleaned it, filled it, pumped it, covered it, locked it, plugged it in.......forget it for 6 months....job done :thumb:
After 6 months I just uncover, unplug, start and drive it no prblem at all 8)