Oh, alright thanks! Another question - is it good to grease the bearing in the picture above also from the bottom/inner side?
I went down that rabbit hole yesterday. Having looked at a lot of videos, pretty much ALL modern builds I saw put bike grease on headset bearing seats (I think mostly for waterproofing?). Given how annoying it is to disassemble headsets these days, and how quickly you can get creaks if you ride in the rain (even once), i would say, cake that b1tch.
It's more contentious for PF BBs, but it seems that Wakos brake protector is the ultimate product to use, as per "ride of Japan" on YT, and apparently Cannondale in mechanics workshops (I think Australia), and cannondale basically invented creaking BBs with the PF BB30. And for us in Europe, Liqui Moly 3312 (made in Germany, cheap) seems to be a legit alternative. I haven't seen anyone saying it doesnt work. Both products apparently are a silicone based grease.
But people do fight over whether loctite is good or not (& if so, which, and which cure time, and how...), and if you believe Shimano you shouldn't use anything at all, and then there are those who put regular bike grease, or lithium grease, or copper grease.
Long story short: put grease on your headset bearings, and wakos / liqui moly 3312 on your PF BB. Liqui molly costs 10 eur: if it reduces the chances of a creak, it is money worth spending.
I bought that Moly thing yesterday, i plan to try it. I did an extended 600+W effort a few days ago and i (think i) heard a noise for the 1st time on my LT268, which sent me down that rabbit hole in the 1st place.