Flushing Coolant w/out Drain Plug

[dudleykid]

I have a Silverado 2500 6L WT. I put some green antifreeze in the reservoir and found out that it is bad to mix the green antifreeze with dexcool and thus needed to flush my coolant. I then did a coolant flush with only dexcool to get the green antifreeze out of my truck. All I did was drain the dexcool from the radiator hose, refilled the reservoir with water, ran the water through the engine, and then drained the dexcool from the radiator hose again. All in all, I drained the dexcool from the radiator hose three times (three intervals of flushing water through the engine). I DID NOT remove the drain plug to remove the dexcool from the bottom of the engine block. Did I get all of the green antifreeze out without removing the drain plug or do I need to do another coolant flush?

[ATMINF]

You should be good, I would just keep a eye on the coolant, if it starts to gel up in the next 20,000 miles you will just have to take it to a shop and get it flushed professionally. When I flushed my coolant I did basically what you did( no green coolant though), pull lower radiator hose dump old coolant out, reattach hose, fill with water, let it heat up to running temp, shut off, dump and repeat, I also changed out the hoses at the same time.

[dudleykid]

ATMINF thank you for the quick reply. I appreciate the advice. Now when you say the coolant gels up, how do I check this? Do I iust put some coolant on my finger and see if it feels like gel?

[dudleykid]

I ask because I imagine gel is heavier and would not end up in the reservoir.

[ATMINF]

You will see it in the coolent tank.

[Black02Silverado]

You should be good to go. What little green coolant that might be in there isn't going to do anything.

 

I jumped the gun early back in the day of all the Dexcool coolant issues causing problems in vehicles and flushed my cooling system and replaced it with the green stuff. No issue at all but if I knew then what I know know I would have kept the Dexcool in there.