Thanks all. A good selection to sift through.
ASC1951: how do you clean your chain?
Search these forums for the fabled "Mickle method".
Basically you spray your chain with GT85, then wipe, wipe, wipe with a rag. Spray again and wipe again, until it looks cleaner. Then apply new lubricant of choice, applied to every roller, then wiped again with a clean rag. Contiue this loving, if slightly laborious process until the chain looks how you want it to. It does NOT need to be dripping with oily lube. It should have a protectice sheen over the plates, nothing more.
I will only ever deep clean a chain if it has a significant build up of gritty greasy oil on it. I prefer to run mine on dry teflon lube (finish line) both on the MTB and the Boardman. That has the advantage of not being a filth magnet. On one MTB challenge a guy on a Cotic made a point of asking me how I kept my chain and cassette in impossibly clean condition. In the shite and slop of that event the chain gleamed.
I have never deep cleaned the Boardman chain. I have however kept it scrupulously clean by the above method. After 1000 or more miles the chain is still within wear limits.
I use wet lube on the MTB in the depths of winter, but clean the chain even more often as that does attract the grinding paste.