Neighbor now thinks it might have been potassium hydroxide mixed with water. He says it's corrosive. Any chemical engineers out there that can comment on what to do at this point. The purge system is attached to the lift pump with the return line going into the purge bottle. I'm pumped the diesel purge thru the system so I know the primary and secondary filters have purge in them. Whatever the stuff was it was real foamy and I assume that is now what is in the injection pump.
When it stopped, it didn't hestitate or cough, it just stopped firing and the engine was only turning due to the momentum of the car.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13