I have a plastic fan, and the radiator looks newish, as if replaced by the PO. There is one part of the plastic fan shroud that is close to the blades - I'll have to find some way to pull it out of the way...

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1987 Mercedes 300D ~200K (Greasecar & Biodiesel)
1993 Ford F-250 7.3 IDI diesel 165K (Biodiesel)
1996 Thomas/International Bus with DT466 engine