Just done a service on mine,
Motorworks recomended 20/50 for summer use in my 1150GSA. Seems to have taken a few of the noises away, except on start up & idle where it still clanks a bit. Although this may be something else rattling with the vibration on idle. As for changing the oil & getting the level right................FFS how is it so hard to get it right?? Rode bike, got it warm, pulled sump plug & let it drain on the centre stand for about 3 hours. Fitted new oil filter & filled oil, got it spot on half way up the sight glass & then took it for a ride around the block & it was still perfect. Rode to work & checked there & the oil was over the top of the sight glass. Drained a little off when I got home. Then oil was too low & not on sight glass........Repeat process for another day & finally I have got it to sit 3/4 up the glass warm or cold.
Sorry for the hijack but is there a simple way to do the change?