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2G Flushing cooling system

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2stepmonster

10+ Year Contributor
62
0
Aug 3, 2012
Hanover, Pennsylvania
Ok guys, so I had a small radiator leak. And i didnt have money to replace it and still needed to get to work so i didnt get fired...
.......So i put Stop Leak in :ohdamn:

So my question is i now have a new thermostat and new radiator ready to put in, but i want to flush the system so there is no stop leak left. Im new to cooling systems and how they work, can i insert a hose somewhere and just run water through the system until all the stop-leak comes out?

Should i just flush, fill with water, run it, flush again and repeat until the water is clear??:hmm:

Thanks for the help!!
 
Last edited:
You should be able to just disconnect the thermostat and shove a hose in there.

When I had a radiator leak on my custom radiator in a tough spot I contacted the builder, Ron Davis Radiators (a pretty big name in racing and custom radiators). They told me to use a product called Alumaseal. They said it would work very well, and in their experience not cause any issues. So far it's worked like a charm but I haven't gone back to the track yet so we'll see. They also told me that GM uses it on the assembly line with radiators that have small leaks. Assuming that's true that's quite a testament to its efficacy.

Next time if you need a quick solution and are afraid of the off-the shelf quick fixes, and it's a pinhole leak, try black pepper. Like a few tablespoons worth. It works! Got me through my time trial weekend :) I was told a couple eggs will also do the trick, but I haven't tried that as we didn't have any eggs around at the time.
 
You should be able to just disconnect the thermostat and shove a hose in there.

When I had a radiator leak on my custom radiator in a tough spot I contacted the builder, Ron Davis Radiators (a pretty big name in racing and custom radiators). They told me to use a product called Alumaseal. They said it would work very well, and in their experience not cause any issues. So far it's worked like a charm but I haven't gone back to the track yet so we'll see. They also told me that GM uses it on the assembly line with radiators that have small leaks. Assuming that's true that's quite a testament to its efficacy.

Next time if you need a quick solution and are afraid of the off-the shelf quick fixes, and it's a pinhole leak, try black pepper. Like a few tablespoons worth. It works! Got me through my time trial weekend :) I was told a couple eggs will also do the trick, but I haven't tried that as we didn't have any eggs around at the time.

Ok thanks i will try that and if my new one has any problems i will probably check that out. Thank you:thumb:

Just flush pretty good and hope it doesn't clog up your heater core.

Yeah thats what i plan on doing, and i dont think it did, it was only in a feew days and i only used half a bottle and half of that is in the overflow tank:pray:
 
I should add that the pepper/egg tricks are just short term. The pepper got me through two sessions on the track and a 4.5 hour drive home, and was still working a few weeks later.

As for the flushing method, your strategy of flushing until it's clear is about the best you can do.
 
I like to use the radiator flush stuff you can get at walmart or most auto stores.
I have used it on 4 cars this winter and it has cleaned them so everything looks new.
That way if you have any sludge or build up of any kind anywhere in your system this will get it too.
 
I should add that the pepper/egg tricks are just short term. The pepper got me through two sessions on the track and a 4.5 hour drive home, and was still working a few weeks later.

As for the flushing method, your strategy of flushing until it's clear is about the best you can do.


Ok thank you. Pepper seems pretty Legit:cool: LOL

I like to use the radiator flush stuff you can get at walmart or most auto stores.
I have used it on 4 cars this winter and it has cleaned them so everything looks new.
That way if you have any sludge or build up of any kind anywhere in your system this will get it too.

I honestly havent seen that before ill have to look into that too. So you just add it in with your Coolant?
 
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