Rust in my coolant...
This is a discussion on Rust in my coolant... within the General Help forums, part of the LSx Technical Help Section category; I'm going to flush it out, but what things should I look for after it's done? As of now, the ...
10-28-2011, 06:02 PM #1
Rust in my coolant...
I'm going to flush it out, but what things should I look for after it's done?
As of now, the engine runs fine. If I flush it all out, it should clear out the entire system of rust, right?
Is it likely that the rubber will need replacing?
I would like to do this one myself, but I don't have all the necessary tools right now (and it would be a learn-as-I-go experience, so it would take forever).
10-28-2011, 07:12 PM #2
The coolant should be flushed every 3 to 5 years. There's a kit that prestone sells - it was a TSB several years ago. Flush it, run clean water through it a couple of times, then refill with antifreeze mixture and you'll be good to go. If the hoses are original replace them too.
10-28-2011, 11:54 PM #3
- Join Date
- Oct 2011
Is it recommended to pour water on radiator? I think it is the reason why there are rust when emptying the tank.
10-29-2011, 05:15 AM #4
I wouldnt assume its rust. Your dexcool is probably gone bad. You need to flush it out good man. That stuff can make a mess and once it gets goopy I think its imposible to get it out.01 SS A4 3.23-LID-CAI-LTS-ORY-CB-STALL-TUNED-326rwh,335rwt
10-29-2011, 05:18 AM #5
I would also check to see if your stock trans cooler is leaking. You could have trans fluid mixing with coolant.
10-29-2011, 05:36 AM #6
10-29-2011, 05:40 AM #7
10-29-2011, 06:45 AM #8
Hm.... how many hours are we talking about (by the book)? I'm probably going to have to take it to the shop to have it done. Any way I can check the tech's work to make sure he did it thoroughly?
Looking at the DIY thread here on the Forums, access to the parts that need removal seems pretty straight forward. However, I don't have the resources to tackle this one by myself.
Last edited by Naaman; 10-29-2011 at 06:56 AM.
10-29-2011, 08:13 AM #9
What I did last time for a flush is drain the coolant and stick garden hose in my radiator. I run the car with the hose on and no t stat installed. Do all this with the petcock open so the water drains as the car is running and new water keeps filling the radiator. Theres a few ways you can do it.
You might have issues now with your heater core anyway now that your coolant is showing bad signs. Who knows.
If you dont know what your doing and it looks that bad you should take it somewhere.
10-29-2011, 11:18 AM #10
Just got back from the dealer. After it was serviced, I took off the radiator cap and that brown/orange gunk is still on the cap. Looks like it might be on the rim of the neck, too. Yesterday in class, I checked the coolant. It was a bright orange color (which I guess is normal for dexcool?) but I was concerned about the gunk on the radiator cap. I figure it's in the whole system, so I had it flushed. I'm going to take the cap off and clean it once it cools down. After a few drives, I'll check it to see if any more build up occurs.
Last edited by Naaman; 10-29-2011 at 11:46 AM.
10-29-2011, 11:21 AM #11
10-29-2011, 04:23 PM #12
10-30-2011, 04:02 AM #13
On the final fill use "distilled" water with the antifreeze.
11-02-2011, 01:51 PM #14
After having the system flushed, I cleaned off the radiator cap. So, after driving around a few trips here and there, I checked the radiator cap to see if anymore of that chunky dexcool was still circulating in my system. It seems to be completely flushed out. No more gunk has accumulated on the cap since I cleaned it off. This makes me happy. I can't wait to get into some under-car labs, so I can check out all the stuff that shops don't want to bother with...
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