Sorry to bring this one up again, but whilst trying to source 20w-50w oil on Tuesday for an oil change in my 46000m 1150, the only stuff I could find was halfords own brand nasty oil (for classic cars!!!). I tried the BM dealers and they had none (said they put in 10w-40w if they run out of 20w-50w!!!!) and all the bike shops sell is 10w-40w. I gave up in the end and put GTX 10w-40w in. It runs lovely and is nice and quiet. Having read numerous oil debates on this site I am now worried that I've done the wrong thing.
What should I do?
What should I do?


bikers at the harley dealership 