Brown Sludge

[mtrans]

ORCoaster-vinegar yes old school good tip.
I use 150 gr of limun acid(I can`t find name on Wiki or translate) it`s white powder used in cooking,drive at min 100 km and out.But I put 250 gr in 6 lit coalant and it`s clean,after only some 19 yr old steel pipe start to leak,I find that good also.

[745 turbogreasel]

this?
http://en.wikipedia.org/wiki/Ascorbic_acid

[One_punchmachinegun]

Thank you guys, the first flush went well, and to i will be doing again today, the stuff is nasty.  So you guys say about a quart of vinigar then run it to running temp and flush again, But will have to wait till it cools down?
Also the rad cap was shot.. it was new but still failed on me luckly i had been sent a free one with the original that i had bought, good thing that it failed though be cause i would have had no idea that that stuff was in there.
Thanks again.

[ORCoaster]

Once you flush it and button it back up again it should not be a problem to refill and rewarm.  Your problem now might be explaining to those around the car why it smells like pickles. 

A new cap failed?  What the heck is with that nonsense?

[One_punchmachinegun]

Ok so flushed and flushed again, i got A LOT more nastly stuff out. The vinegar seemed to help too. I got it to the point that there is clear water coming out  . Thank you all. I still flush it a few more times to make sure its good to go. On another note just got all my 3" exhaust pieces cut up ready to be welded. Side exit

[mtrans]

this?
http://en.wikipedia.org/wiki/Ascorbic_acid

Look like yes.

[R.O.R-2.0]

just remember, there is LOTS of aluminum in the cooling system.

usually the radiator, the heater core, and a few other things.. very light duty aluminum..

ACID EATS THE HELL OUT OF ALUMINUM.. if you use vinegar, ONLY use it in the engine block its self. i would not let the vinegar get to the radiator or heater core, unless you feel like replacing them in the near future.

ive personally used dawn and powder dish detergent more than a few times. its SAFE..

the CHEAPO radiator flush is not vinegar, or baking soda. its a cleaner with a WEAK acid in it. it feels the same as ZEP-alum when you get it on your hands (it burns like hell) radiator flush cleans wheels pretty good as well.. lol..

[fatmobile]

Hey while you're at it:
 pull the heater hoses and flush the heater core both ways,.. that's where the thin passageways are.

[One_punchmachinegun]

Update,^(I did do that. I made sure to flush it all the best that i could) Coolant is clean(er). Have been driving it daily to temp with distilled water and antifreeze and so far so good.  So it was just some type of build up that just made a mess of everything. But I thank you all for your advise, opinions and concerns.

Tim

[mtrans]

ANother old tip.I use fuel filter as fine polish,anythere you like it/eazy made.

[rs899]

ACID EATS THE HELL OUT OF ALUMINUM..

I can testify to that.  In the MB diesel world the drug of choice for this sort of thing is citric acid.  I used that to flush my nasty Cabriolet when i got it, and just installed a brand new radiator.  I figured I would let it sit overnight.  Next day, I had holes in my radiator.

[R.O.R-2.0]

ACID EATS THE HELL OUT OF ALUMINUM..

I can testify to that.  In the MB diesel world the drug of choice for this sort of thing is citric acid.  I used that to flush my nasty Cabriolet when i got it, and just installed a brand new radiator.  I figured I would let it sit overnight.  Next day, I had holes in my radiator.

and that was a BRAND NEW radiator..

if you get lucky, and you have an OLD COPPER radiator, you might get lucky, but i wouldnt chance it.

[ORCoaster]

So we learn not to use strong acids, Citric acid is about ten times stronger than Acetic.  pH of 2.2 compared to 3.2, and we know to dilute, fill, run to warm and backflush several times. 

I didn't think anyone would be running the vinegar for more than a half an hour when I suggested it.  I was thinking a driveway operation not a drive for days deal.

Glad to have helped clean it out.  Should be good for several years now.

[One_punchmachinegun]

^ this is what was done, I did not let it sit over night or even run it like that for a day knowing the acidic quality that vinegar does have. But i ran it for  about 15 mins, then drained and flushed with fresh water. Then repeated two times. And made sure to get all of it out. I still flushed for several days after running it, to get the gunk and vinegar out for sure. It seemed to do the trick.

[nathantheengineer]

Thats good news.
Glad its fixed.