With apologies for the thread drift, but I think being able to use multi grade oil allows for much more rapid warm ups in Jabiru powered aircraft, as opposed to say the P&W 1830s in a DC3 where I seem to recall it took quite a while to get everything into the green on the first flight of the day. Plenty of time for intricate run ups, bleeding auto pilot hydraulics, feathering props etc.
And we did it all without a checklist!