Rusty
The RFM, as I'm sure you know, reminds you that the fuel consumption will increase with the LG down but rather unhelpfully does not go on to specify how much it increases. I will try to find out but in the meantime we used to use 5% on the S61 so I would guess that this number would do for the time being. Get back to you soon.
Tottigol
You can just see that the engines aren't running so I would guess that that page defaults to 90. We have yet to even see this new software so unable to comment beyond saying that it's good to see us moving things in the right direction. Now we just need the fuel display on the PROG page to be a little more user-friendly.
G.