phosgene gas
AKA mustard gas as CB first said.
Darn.....
I suggest . 7 bonus hp points.....
But don't rush right out an submit your application to appear on Jeopardy!!
One of my boating friends who runs a diesel boats, and knows all the commercial fishing guys out of Point Judith, RI, advised me never to use a dry chemical extinguisher to stop a runaway... . he said he saw an engine that got ruined by that.
I never asked about the details... and possibly he didn't know any details... .
Certainly I don't want to start a war over this... I just took it to heart that I wouldn't use one to stop a runaway... . which is a rare occurance in modern diesels.
Jay