I have to admit to finding all the lay-up advice interesting, along with the theories presented..and claiming no real expertise I am left a tad betwixt and between..

My thinking is that when an engine is shut down hot, that the oil will drain off quicker than it would do when cooler after a short run up, and if the engine is left without starting for quite some time then whatever oil is not trapped in some way will drain down to some unknown degree.... Proof of which can be heard when an engine might be heard to rattle somewhat when initially fired up, perhaps more so if the engine is old or slightly worn.

Whenever I was bringing an elderly engine back to life after indeterminate periods of lay-up, I would have the plugs out and spin it till the oil pressure light or gauge determined that oil pressure was available in the system.. On modern cars that is not so easy and may cause all sorts of digital confusion ( I just don`t know). These days one has only to touch the door handle on some cars for the fuel system to be primed in order to ensure a rapid fire up, which may seem less than ideal following a degree of lay-up.

In a past life I have been involved in firing up LARGE old engines and the process was to pressurise the lube system first, by either the electric lube pump or the hand operated oil priming pump prior to firing it up. some of these engines were for emergency usage and had to be capable of taking up duty in as short a time period as possible, thus on occasion were tested to ensure they could perform within spec... the amount of rattling given off until oil pressure began to register was scary indeed.... These engines were normally run once a month with their oil systems pressurised prior to start up, and annually put through emergency tests, if not already called upon to do so within that year. More modern units seem not to have oil priming systems, perhaps all just part of the evolution in engineering materials with finer tolerances and advances in oil technology...?

My mid 80`s +8 has by way of it`s systems design a bit of an unintended (?) delay built in to the start up process after lay up which allows the oil pressurisation process a bit of ahead start, in that it can take a bit of cranking before it fires up, and which I suspect may be down to the fuel in the carbs having evaporated during lay-up. Thus the time taken for the fuel pump to restore the levels in the float bowls to the extent of the time taken before the engine finally fires up, all of which seems ideal, giving the starter motor a bit of exercise in the process..BUT, the poor old battery needs also to be up to the strain placed upon it, which could be no problem if kept on a Cetek or similar, though if not, could spoil the fun somewhat..?