Trull
Über Member
- Location
- Aberdeenshire
Never mind the crack (frame is scrap IMO as none of the other tubes can be trusted to be any/much better), what about the chain? Are you lubricating it with used engine oil from an old transit van?
Its ceramic lube - it naturally goes black as the boron nitride reacts and places itself into any rough nano-surface defects to form a smooth layer similar to graphite but with a higher pressure rating. But, also I had taken the wheel off to do a clean, so that was it at its dirtiest.