Spray it with brake Kleen and a wirebrush. Blow it clean with an air gun. Why is it being so extremely overthought? The delivery valves take 30 minutes.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k