I'm kind of slowly rebuilding my old G5 and I wanted to get the engine/tranny/rear drive casings clean before I reassemble it. This is the first time I've been at all concerned about appearance, but hey, I'm experimenting. I know it's not a loop, but this list harbors most of the fanatical mechanics, and is a lot easier to navigate than the general list. Besides, I can apply the info when and if I rebuild my Eldo. But considering how long this one is taking... Anyway, at work we have a new blast cabinet with mild abrasive (I think walnut husk). Is this an appropriate way to clean the cases? How about the combustion chamber? And once that's done, do ya'll put any kind of coating on the (outsides) to keep it from oxidizing?