Protecting your BOV

[T-oddity]

LS Depending on how long you intend to lay the vehicle up for you may also want to consider draining off the fuel as this is likely to go off or put in a fuel stabilizer, but these are usually only used for over wintering vehicles so just a few months.
Also if the vehicle as been stood for several months it is worth hand cranking the engine by some means before attempting to start as there can some times be an issue with a sticking valve in older engines or in later engines cranking the engine over without fuel or spark plugs to get oil through out the engine as cylinder walls and hydraulic valves will be dry.
Alternatively have a regular schedule of running the vehicle up untill it is up to working temperature which would be my choice saves a lot of work and the vehicle is ready to go at short notice.