Normally have to run the engines every two weeks in short term storage
Anything longer than that you have to inhibit the engines with special oil in the fuel systems and silica gel in the intakes
I work on classic aircraft and we have to run then once a week if they haven't been flown
Any excuse...
No problem
Text me on 07443634760 and you can try my car for size
But beware of the Mrs !! My Z gets regularly stolen/borrowed for shopping trips and just going for a coffee with the girls etc....