Last Friday we had close to -40C or F. Same at those temps really. Anyhow my car started fine, I went to work, only to be told that our school buses are having a hard time to continue running. Too cold they said and school was canceled. VERY annoying since I was there and now have to come back another day to make up that day. It seems other school districts had not issue with the cold temperatures. To me it seems our buses were not prepared.
I know you can mix an additive in the Diesel to keep it from gelling up. But how low can you go? What else could stop a Diesel bus from running at such low temperatures if it is already running. What is the lowest temperature for those additives to still work?