[FWB]

for cosmoline removal kerosene works the best. for oxidation on aluminum wd-40 on a rag will remove it, and protect from future corrosion. it will probably take the rust off the bolt heads too and its not harsh on painted parts. i would be careful with floride it is an oxidizer. unless you want stuff black oxide'ed. i also have the aluminum oxidizing over the winter on my intake and valve covers, the wd-40 usually does the trick.

fred