Originally Posted by
mrgsr
the rod shouldnt rust as its brass/aluminium..the rust will be coming off the crank
use scotch brite to clean it all up and then use wd-40 to spray it all clean. then methylated spirits to get rid of the wd40 as that stuff stinks
then oil it up. just soak it with after run oil. if you think the oil is too thin then go with power steering oil
part of the rust is probably from the steel insert in the buttplate

as well as many other steel items in the internals of the engine
anyway you look at it , it needs some attention

would suggest new bearings as the races more than likely have rust on them which will only get worse