What should the temp be on a Chevy Duramax?
What should the temp be on a Chevy Duramax? It does run right at 180 now without the winter front and 186 with the winter front (temps read with Edge Insight). It does take highway driving to get it warmed up. The higher temp makes a huge difference in heater output. It does take forever to warm up just idling. Mine was running around that temp so I replaced the thermostats. What causes a Duramax diesel engine to heat up? When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo...