Thanks all. I washed the bike frame down with soapy water. And then degreased it with IPA. The channels for Di2 cables have adhered perfectly.
I also wiped the calipers down with IPA.
Things seem to work well so far.
J
And the living room floor?
(FWIW my first wife, having seen how my mother suffered with my dad, banned all mechanical activity from the house, on pain of deff or worse. My second wife got me as already house-trained -except when she is working nights
. Didn't stop the messing up the house genes from being in my daughters though
. I've been clean for over 40 years!
Incidentally there are oil absorbant mats in large sizes used by motocross riders in the pits of competitions. It's part of competition rules at least on some courses in France (and almost certainly elsewhere) for reducing the environmental damage. They are not that expensive (and big enough to take a motocrosser and a couple of mechanics so more than adequate for a pushbike in a living room). Oil absorbant mats exist for industry (and garages) for protecting small surfaces but they tend to be single use and, I think, come in rolls like felt. The motocross version is a bit thicker, folds up and should last a season. Worth considering if you have to work in clean areas and want to save a bit of time on cleaning up. It pays when you want to move flat!