1. Remember that coolant goes all the way up to the dashboard heat/defrost system, and in some systems to the water heater if equipped with heat exchanger. Set the dashboard controls to full heat. You do not need the blower to be running.
2. Allow the engine to warm up normally while carefully watching the temp. gauge on the dash. Be alert for a sudden spiking of temperature.
3. If everything goes well, shut the engine down and let it cool. Check the expansion tank/resevoir and top off as necessary.
4. Repeat again twice.
5. Run on the road while carefully watching the temperature.
This is an over-cautious approach, but well worth it IMO.
2008 Itasca Meridian 37H & 2015 Flagstaff T12RBST
2011 & 2012 Len & Pat's "One lap of America"
27K miles & 41 states in 13 months - Woo Woo
Yellowstone Lake 6-1-2012