I have been looking at oil. The Castrol 5w40 I have always used on the GS has changed last year or something like that. It might or might not have helped the bike get a little bit of oil consumption.
So, over the next few days it'll have Liqui Moly 5w40 Street Race put in, it's a highly detergent oil. Then in September I'll be going to Ireland to visit a few friends. Sometime in October or November or December I shall go to Morocco so probably need to change before that. That oil change will probably see Ravenol 5w40 put in, Ester based.
We'll see how that goes, I'm hoping for some improvement. Worst case scenario is it stays the same.