Clean an aluminum engine
Simple green I think is a good option (9.5ph), but sure isnt as strong, for cutting gunk/grease. Luckily, when I bought my car, the only gunk was on the steering rack, so it wasnt too bad, getting everything cleaned up under there.
Im not sure, but I think a steam cleaner would by best. Itd be nice if some professional detailers would chime in.
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