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Senior Member
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Join Date: Jan 2009
Location: St. Joseph, MO
Age: 41
Posts: 2,036
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Senior Member
Join Date: Jan 2009
Location: St. Joseph, MO
Age: 41
Posts: 2,036
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You can't hurt the engine running no coolant, unless you let it get too hot. If you didn't let it get hot, then it's fine. It could have been bone dry on coolant, and running it for a couple minutes still wouldn't have hurt anything.
For future reference: when you have drained all your coolant, and need to refill you have a couple options. You can either flush the system by filling it with distilled water only and running it for a while, draining, and repeating. When I say run it for a while, let it get to operated temp, so the thermostat opens and everything is actually circulating.
Until you reach operating temp, the thermostat doesn't even open, and no coolant is even moving through the radiator. It's just sitting there.
Or if you don't want to flush, then you need to always FILL the radiator all the way full first. Burp the top hose a little and then fill the overflow about halfway. Run the engine like you normally would, even drive it a day. Then when it's fully cold sometime before you drive it again, take the radiator cap off and see if there is any room to top off. If there is, then your overflow is probably empty. So top of the radiator, and fill the overflow tank about 1/4 full. Done.
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2001 SR5~Thundercloud Metallic~3.4L Auto~4x4~260k miles~TRD 2gen black Supercharger~URD AFR Calibrator~B&M 70264~Bilstein Adjustable w/ tall '99 fronts~ProComp 3" rear springs~Nitto Ridge Grappler 285/70R17's on 17x9 Enduro's~Yakima RailRider w/48" bars~ScanGauge II
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