Thanks, bud!

Well, here's the trick:

I never let it get dirty in the first place.

So all I have to do is Simple Green it twice or thrice a year and use my assortment of specific-use toilet brushes for the hard-to-reach places and Voila-clean!

And her sister Violet thinks it's pretty snazzy too.

And it's all about the magnesium content in our engine parts. I've tried 2 different aluminum cleaners (oxidation removers). No joy. I called ZEP and was told that it would be ineffective on an alu-mag alloy. Any acids would only dull the finish. Geez-that's exactly what happened.

Go figure.

Mechanical polishing is their best suggestion.

Worked for me.