Recent Topics
Premium guard oil filters
by Jaha24k
06/19/18 04:09 PM
76 super motor oil- synthetic blend 5w-30
by Jaha24k
06/19/18 04:07 PM
Who makes the Mopar 5038041AA filter?
by Quattro Pete
06/19/18 03:55 PM
Ruger Mini-14, yay or nay?
by 28oz
06/19/18 03:51 PM
USPS long long delivery to BlackStone Labs
by Pajero
06/19/18 02:58 PM
House A.c. vent leaking water
by motor_oil_madman
06/19/18 02:55 PM
"synthetic" gear oil and LS additive?
by nthach
06/19/18 01:54 PM
Supertech wix ST8 5514 miles
by jakewells
06/19/18 01:38 PM
Review - Sonax Spray and Seal.
by PimTac
06/19/18 01:36 PM
Lets Get a True Group 4 Sticky going!
by KMJ1992
06/19/18 12:17 PM
Rotella 10W40
by jakewells
06/19/18 10:43 AM
Extend WiFi Range at the Laptop?
by clarkflower
06/19/18 10:40 AM
Silicone containing waxes
by mjoekingz28
06/19/18 09:44 AM
Matrix totaled
by circuitsmith
06/19/18 08:32 AM
Door rust problems
by Dave Sherman
06/19/18 07:51 AM
2016 Honda Civic problems
by dbias
06/19/18 07:39 AM
Royal purple 75-140 in a subaru rear
by 91camarosRS
06/19/18 07:32 AM
OCI. With short trips. Nissan 4 liter
by Gawardawg
06/19/18 06:52 AM
Approach Watching on the Beach @ St Maarten ...
by LoneRanger
06/19/18 06:41 AM
Honda Accord Needs Shocks; Front, Back, or Both?
by tc1446
06/19/18 05:50 AM
Newest Members
JustaDude, 3horseman, Firedog45, WtsTacoma01, Orion62
65265 Registered Users
Who's Online
92 registered (2oldtommy, Alfred_B, 28oz, 5azzmonkey, 330indy, 11 invisible), 1583 Guests and 52 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65265 Members
67 Forums
285604 Topics
4766313 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4645750 - 01/25/18 09:26 AM Recognise Coolant Residue? Blocked heater cores.
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Had an MDX in the shop. Signs of plugged heater cores (front and rear) and partially blocked rad (hot/cold spots).

Tried flushing with CLR, degreaser, citric acid to no avail. Ended up replacing both heater cores and the rad, along with a new thermostat and water valve.

Now that the job is done (ugh), I pulled the bottom tank off the rad, and found this residue. It is like a gritty, slimy jelly. The vehicle did have aftermarket, non Honda Type 2 coolant. No idea what it was, smelled terrible, was greenish in colour.

Anybody seen residue like this?


_________________________
Mighty Mouse Tech
Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL

Top
#4645797 - 01/25/18 10:11 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1706
Loc: Alberta
It's Flubber!

Top
#4645807 - 01/25/18 10:16 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
Chris142 Offline


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
Stop leak?
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

Top
#4645819 - 01/25/18 10:25 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
rshaw125 Offline


Registered: 08/18/04
Posts: 3258
Loc: Raleigh ,NC CSA
Looks like what was in my Buick courtesy of Death-cool.To flush it out I drained the death-cool and filled with water. Drove it for two days (Summer) ran the heat and drained, repeat.
_________________________
2012 Porsche Carrera S
2016 Ford Edge 2.0
2002 Taurus Vulcan SOLD
2006 Explorer SOLD

Top
#4645828 - 01/25/18 10:33 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
I suspect it may be silicate/phosphate precipitate from using an improper coolant.
_________________________
Mighty Mouse Tech
Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL

Top
#4645838 - 01/25/18 10:48 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
CT8 Online   content


Registered: 10/09/14
Posts: 10938
Loc: Idaho
Mixed coolants?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4645852 - 01/25/18 10:57 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: CT8]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Originally Posted By: CT8
Mixed coolants?


That is my feeling. Customer had his timing belt/water pump done a year previously at a independent garage.

Sucks because the heater core/rad job required 18 hours, and nearly $2k in parts, and that was being very generous to the customer.
_________________________
Mighty Mouse Tech
Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL

Top
#4645888 - 01/25/18 11:35 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
Kestas Online   content



Registered: 06/04/02
Posts: 12325
Loc: The Motor City
It looks a lot like water glass from the silicated compounds in "green" coolant. Citric acid should have taken care of it.

Isn't this why they used to rod out radiators way back when?

Top
#4645900 - 01/25/18 11:51 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
WyrTwister Offline


Registered: 01/13/13
Posts: 1505
Loc: Texas
Our water is very hard with lime / calcium deposits . That is why they used to dod out radiators when I was young .

I have 2 cars with DexCool . If I was to switch , what would be the proper coolant ?

Thanks , :-)
_________________________
Wyr
God bless

Top
#4645907 - 01/25/18 11:55 AM Re: Recognise Coolant Residue? Blocked heater cores. [Re: WyrTwister]
dogememe Offline


Registered: 04/15/17
Posts: 597
Loc: SF BAY AREA, CA
Originally Posted By: WyrTwister
Our water is very hard with lime / calcium deposits . That is why they used to dod out radiators when I was young .

I have 2 cars with DexCool . If I was to switch , what would be the proper coolant ?

Thanks , :-)


Keep the dexcool, there is nothing wrong with it in gm vehicles as long as it's maintained properly and not mixed with non-dexcool coolants.
_________________________
2007 Ford Crown Vic P71 4.6 ~124K Miles, Valvoline SynPower 5W-30, Royal Purple Filter *Daily Driver*
2010 Ford Escape 2.5 ~70K Miles, Valvoline SynPower 5W-30, Wix Filter *Turo Rental Car*

Top
#4646047 - 01/25/18 02:25 PM Re: Recognise Coolant Residue? Blocked heater cores. [Re: WyrTwister]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1706
Loc: Alberta
Originally Posted By: WyrTwister
Our water is very hard with lime / calcium deposits . That is why they used to dod out radiators when I was young .

I have 2 cars with DexCool . If I was to switch , what would be the proper coolant ?

Thanks , :-)


Distilled water and more Dexcool. I run Dexcool in my 2008 3/4 ton suburban. I won't risk changing to something else. It's running fine. Changed it once, will do again next year.


Edited by Snagglefoot (01/25/18 02:26 PM)

Top
#4646048 - 01/25/18 02:25 PM Re: Recognise Coolant Residue? Blocked heater cores. [Re: dogememe]
Rand Offline


Registered: 08/20/03
Posts: 12638
Loc: NE,Ohio
Originally Posted By: dogememe
Originally Posted By: WyrTwister
Our water is very hard with lime / calcium deposits . That is why they used to dod out radiators when I was young .

I have 2 cars with DexCool . If I was to switch , what would be the proper coolant ?

Thanks , :-)


Keep the dexcool, there is nothing wrong with it in gm vehicles as long as it's maintained properly and not mixed with non-dexcool coolants.


And not run low, and kept fresh, and in good condition, and a good radiator cap.


Yep alot of ands... Deathcool works great until it doesnt. It has many advantages. to old green
_________________________
2017 Jeep Cherokee Trailhawk V6

Top
#4646127 - 01/25/18 04:04 PM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1706
Loc: Alberta
If you're really paranoid, buy the Dexcool from the GM dealer. Wasn't much more than the aftermarket.



Edited by Snagglefoot (01/25/18 04:06 PM)

Top
#4646245 - 01/25/18 06:30 PM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1706
Loc: Alberta
Fresh Dexcool s a bright orange and looks sort of pink or red when inside the plastic reservoir. The part number on the jug is the Canadian part number.






Edited by Snagglefoot (01/25/18 06:31 PM)

Top
#4646281 - 01/25/18 06:58 PM Re: Recognise Coolant Residue? Blocked heater cores. [Re: mightymousetech]
dlundblad Offline


Registered: 09/30/13
Posts: 10011
Loc: Indiana
Could be tire slime? laugh
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


Top
Page 1 of 2 1 2 >