Note on the EMD turbos, I meant to say that the turbo and roots blower provided air flow to get the exhaust out of the engine.
Credit links:
YouTube:
A look back railroading in Binghamton, NY 1994 Part 7 final-Jay Winn
https://www.youtube.com/watch?v=OzO_eYVON7Q
Conrail in the 1990's Vol 17-Jay Winn
https://www.youtube.com/watch?v=n2YnsS1yjK8
A bad day in Utica- Jay Winn
https://www.youtube.com/watch?v=emj6oFO-Aj4
Remembering Conrail Part 102 Utica, NY May 1999 - Jay Winn
https://www.youtube.com/watch?v=8hiDB0y87i4
Remembering Conrail Part 95 Utica, NY December 1998 - Jay Winn
https://www.youtube.com/watch?v=Nvn_Cg0Y1ns
Combined Turbo Supercharger? 2-Stroke EMD Ship Engine- Fix&Forget
https://www.youtube.com/watch?v=ItI5B6aVZXU
Image links:
BN SDP40 Keon McGarvey
https://commons.wikimedia.org/wiki/Category:EMD_SDP40_locomotives_of_the_Great_Northern_Railway_(US)#/media/File:GN_325.JPG
https://creativecommons.org/licenses/by-sa/4.0/
CSX SD40-3 Dan CC BY-SA 2.0
https://commons.wikimedia.org/wiki/Category:EMD_SD40-3_locomotives_of_CSX#/media/File:CSX_4072_(30200786304).jpg