Best de-greaser for old caked-on oil/dirt?

hemi71x said

Damm, is that stuff still made?

I had to use that stuff on the wash rack, when the Phantom had to be washed.

Strong stuff.

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It is still made but is now highly controlled. No more washing airplanes or hands with it. I've only seen it lately in parts cleaning machines and I think anyone within fifty feet has to wear a haz-mat suit.