Hi Scott, Doesn't the thermostat prevent coolant from flowing to the rad if the engine is below its target threshold? In which case a short-circuited cooling hose or an open-flowing heater core can't affect warmup, because (as I understand it) there's no coolant flow out of the engine bay until the engine reaches its optimum temperature. I never worry about turning on the heat too soon in winter... because in my 46 years of experience with long Canadian winters you don't get any until the engine is ready to give it to you anyhow. Unless you use a gas or propane furnace, that is. Happy Trails, Greg Potts 1973/74/79 Westfakia "Bob the Tomato" 1987 Wolfsburg Weekender Hardtop www.busesofthecorn.com www.pottsfamily.ca Scott Daniel - Turbovans wrote: > in the wintertime......you'll get faster warm up of the coolant, with the > heater circuit off. Wait for 5 to 8 minutes of driving to happen in the > winter before turning on the front heater valve. |
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