Originally Posted by PGreenSVT
Since you are quoting me I will answer this for you. You do NOT want to go without a thermostat for normal operation of your truck. This is strictly a time saving convenience when flushing as many times as you need to when cleaning out the cooling system and changing over to elc. For the flush to work it has to circulate the water for about 5 minutes on each flush cycle. Without the thermostat it starts circulating as soon as you start the engine. If you leave the thermostat in you have to start the engine, wait for it to come up to temp and open the thermostat to begin circulating the water. Considering that we are talking about 12-15 flushes that becomes significant. Time to pull thermostat = 10 minutes. Extra time to let the engine heat up before circulation begins = 10 minutes x 12 to 15 cycles = roughly 2 to 2.5 extra hours to do the job if you leave the thermostat in. Both ways will work. I recommend pulling the thermostat for the flushes and installing a new one when you are done. They only cost about $20 and it is good preventive maintenance. Hope this clears it up.
This has got to be one of the greatest idea's I've ever heard. Can't believe I didn't think about this when I did mine.
You, good sir, are a genius.