Fubar231 Posted July 16, 2012 Report Share Posted July 16, 2012 When i change my T-Stat, and drain the coolant out. When i put it back together should i fill the radiator up with water and run the car till the t-stat opens up, then drain out all the water to make sure i get all the old coolant out, or will i be ok after draining out the radiator and taking the thermostat out. I don't know how much coolants left in the motor after removing the t-stat and draining the radiator. Also, how much does the stock radiator on the LS1 take? Thanks Quote Link to comment Share on other sites More sharing options...
351mach11647545510 Posted July 16, 2012 Report Share Posted July 16, 2012 are you wanting to flush it all out? Quote Link to comment Share on other sites More sharing options...
Fubar231 Posted July 16, 2012 Author Report Share Posted July 16, 2012 Well im putting in a new tstat and since I have to drain the radiator I wasn't sure if I should flush out the block or not. Im unsure if there's red or green coolant in the car but ill find out tomorrow when I drain it. I know that you can't mix green and red. If its red ill flush it out but if its green I wasn't sure if I should still flush it or not. Quote Link to comment Share on other sites More sharing options...
Drew2o2 Posted July 18, 2012 Report Share Posted July 18, 2012 There is a coolant drain on the block near the starter it is a Allen head. I have a 160 and Honda blue coolant in mine. The blue stuff is ethyline glycol like traditional green coolant however it has additives to protect aluminum engine components. It runs a little cooler than stock but when in traffic it is mostly identical since i havent modified my fan speed settings yet. If you don't feel like pulling the block drain than just fill her up with distilled water a few times and then dump it until it drains clean. Do not put tap water in your car. Quote Link to comment Share on other sites More sharing options...
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