So over December, my bike was parked up as I had a knee operation. Started riding again in mid Jan. Since then, my average MPG has gone from about 68-70 ish too 60MPG.
My ride hasn't changed. I still do about 30 \ 45 minutes either way, daily, to work.
Tyre pressures checked
I use a scottoiler, so that's not the issue (for the first week, I had it wide open to make sure it was properly lubed)
I've tried putting super unleaded (from Esso) through it to help clear everything up.
Anything else to try?
I hate not having somewhere dry to store the bike ಠ_ಠ