Did you know that 40% of engine downtime is coolant-related? This month on “Solder & Soot,” we dive into the science of coolants with Joe Long of Old World Industries. Joe has more than 40 years of experience in the trucking industry and is definitely an expert in his field. Not only does Joe answer our top questions, but he also explains the most common mistakes technicians make when it comes to coolants, cleaners, and other chemicals in this latest episode.