Alloy going powdery.

ian86, Mar 2, 1:25pm
My bike has been sitting around in the shed way too long under a cover., I noticed today that the engine casings are going a bit powdery!. was wondering what the best remedy for getting it back to how it should be is. cheers in advance.

quickstitch, Mar 2, 1:31pm
autosol, on a rag and many hours of elbowgrease.

kazbanz, Mar 2, 1:37pm
to start with soap and water and a scrubbing brush will remove the "rust"
then as qs says autosol or if you want a quick fix a spray with cilicone with reseal it for awhile

jenny188, Mar 2, 2:27pm
Try your marine dealer. The may tell you the brand ofrestorer they use to put the shine backon unpainted aluminum boats. Usually a weak acid based cleaner like sulphamic acid. Wipe on, rinse off.Coat with nylic or spray with clear lacquer to seal