Hi All'

I'm rusty on compression checks. Can someone refresh my memory on two points: should the engine be all warmed up? ( it seems like it should) and; I can't remember how to do a leak down test but I seem to recall this as a good time for it. (or maybe I'm thinking of something I do to check the integrity of hydraulic seals....)
Thanks, I'm going to play frisbee with our dog for a few minutes and come back and check shortly because it seems like I usually get a rapid response on this forum!

Basil