See if it rotates and has any resistance. Do a full rotation. Let’s see what happens. It won’t tell you how much compression but you’ll get an idea if it has any.

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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