Striker

iTrader: (1)

Here are some pics of what I'm talking about. Anyone else experience this?







Car spends a lot more time sitting than being driven.

Thoughts?

ULTIMATEORANGESS

iTrader: (4)

yes, its normal.


i dont have a problem with dexcool. many dont like it.

versz

Breaks my heart everytime I check it...and that gum stuff doesn't come off. But its a small price to pay for dexcool

bww3588

iTrader: (49)

Normal in the over flow tank. Condensation collects in there, and when non distilled water mixes with dexcool, it will do that.

RevGTO

iTrader: (12)

Like everyone says, "normal" - not a problem. But at 13 years and 24k, if you've never had your cooling system flushed, you need to. Replace with G-05 or Prestone All Makes and forget about Dexcool sludge worries.

Striker

iTrader: (1)

I replaced it yesterday but I did put dexcool back in again.

Is there any benefits what so ever to running dexcool in gm's vs non dexcool?

RPM WS6

iTrader: (3)

My '02 looked like that when the coolant was 5 years old with ~70k miles. It cleaned right off the dipstick with some brake parts cleaner. I have not had that problem ever since, but I keep the coolant changed more often than the previous owner did.

99'CajunFirehawk157

iTrader: (57)

Flush that overflow tank every year or so, rad every 3yrs or so. YMMV.
I run it too fwiw.

chemicalstylez

F dexcool. I used it once, and it clogged up everything. I'll never use it again.

bww3588

iTrader: (49)

Dexcool didn't ruin your system, something else did. Plain water, green coolant...that's what ruins dexcool is contaminants.

senicalj4579

iTrader: (41)

Iv owned 3 ls1s and never a problem with dexcool. I would do a flush though.

lees02WS6

iTrader: (5)

I've done two dexcool flushes myself, the only two it's gotten in the ten years I've owned it since it was new. Both were done with distilled water, I have not had any issues.

BAMALS1

iTrader: (16)

No issues here...mine has always been clean because I flush it regularly.

RPM WS6

iTrader: (3)

Coolant circulates between the overflow and the radiator with every heat up and cool down cycle, so if you change it regularly there shouldn't really be a need to do anything special with the overflow bottle, since fresh coolant is always mixing in. Only time I ever do anything special with the overflow tank specifically is if I'm starting with a car that's been neglected.

After 14 years, my '98 has a 100% original cooling system with zero issues of any kind. It's never seen anything but dexcool, changed regularly.

chaman

iTrader: (5)

Mine looks exactly like that.

NC01TA

Just more info on Dexcool. No issues here with it. My dipstick is clean. I've flushed the system once (about 3 years ago at the 20,000 miles mark) since new, and I'm approaching 30,000 miles now.

mjs1012

iTrader: (36)

Mine has that too. I think it's normal.

thatoneguybriz

iTrader: (2)

Normal. If it bugs you, remove the over flow tank and clean it with a mild solvent or something containing citric acid. Don't forget to flush with clean water thoroughly before refilling.