no mate was told to do it with ignition off plus thats what the cossie workshop manual says to do with a 2wd, dont forget urs is a pf09 not pf01 thats in the 2wds!!!
Originally from brighton but lived worthing way about 3yrs odd now, you havnt seen me driving about as my saph has spent most of that time sitting on my parents drive

finished a rebuild just before xmas and only just finished running it in so got the little niggles to sort out now!!