spence said:Methalated spirit would be an alternative if no brake cleaner to hand.
Howard said:Out of interest, what's wrong with warm soapy water? On the proviso that you wipe the disc dry after cleaning.
+1brake cleaner. does exactly what it says on the can.
tundragumski said:Yes, methalated spirit; but NOT white spirit as this leaves a residue behind which you don't want on your rotors.
Methalated spirit is toxic so read the label - it can have very serious effects such as blindness so don't drink it, breathe the vapours or have contact with the skin.
tundragumski said:warm soapy water will not be as good at removing oil and grease that might have got onto the brakes from the drivechain (esp. the rear one)