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Coolant leak - happy new year to me! #4620406
01/01/18 09:43 AM
01/01/18 09:43 AM
Joined: Dec 2017
Posts: 417
Massachusetts
VeryNoisyPoet Offline OP
VeryNoisyPoet  Offline OP
Joined: Dec 2017
Posts: 417
Massachusetts
Low coolant warning light this morning when I started the car. Found a nice little puddle under right front corner:



Took off splash tray to see fresh green drops on bottom of radiator:



Discovered the top radiator hose decided last night was the night to begin weeping. Sealant there is mechanical reinforcement for oil cooler hose fitting.



Now it's 5 F / - 15 C outside and I get to figure out why, how, and how to make it stop leaking. Happy new year! LOL crzy shrug


1998 V70 GLT / 195k miles [10w-30 Valvoline Syn w/ Maxlife Tech + Mann W917 filter]

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620438
01/01/18 10:13 AM
01/01/18 10:13 AM
Joined: May 2005
Posts: 2,249
Toronto, Canada
George7941 Offline
George7941  Offline
Joined: May 2005
Posts: 2,249
Toronto, Canada
You are limited in what can be done in this very cold weather. Working with rubber components in cold weather is difficult.

First step is to further tighten the existing clamp. Next step would be to add an extra clamp. Hopefully this can nurse the car along for a month or two till you get some warmer weather and then you can change out the hose if necessary.

Shrink clamps are very good at preventing cold leaks. Trav, the Bitog guru on all things automotive, is a big proponent of using Hylomar to prevent rad hose leaks.


2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620455
01/01/18 10:24 AM
01/01/18 10:24 AM
Joined: Apr 2013
Posts: 2,417
The Northeast
mclasser Offline
mclasser  Offline
Joined: Apr 2013
Posts: 2,417
The Northeast
I feel your pain man. Doing any car stuff in the bitter cold blows. I replaced a cracked coolant reservoir for my SIL last night. I had to keep taking my gloves off to pick up bolts and it sucked. The joys of winter...


2018 Hyundai Elantra VE -- 6K
2013 Honda Pilot EX-L 4WD -- 57K
2002 Honda Accord EX-L -- 212K

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620470
01/01/18 10:34 AM
01/01/18 10:34 AM
Joined: Jun 2003
Posts: 17,810
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,810
Deplorable in apple valley, ca
Did you smear sealer all over there?


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Coolant leak - happy new year to me! [Re: Chris142] #4620485
01/01/18 10:48 AM
01/01/18 10:48 AM
Joined: Dec 2017
Posts: 417
Massachusetts
VeryNoisyPoet Offline OP
VeryNoisyPoet  Offline OP
Joined: Dec 2017
Posts: 417
Massachusetts
Quote:
Did you smear sealer all over there?


Yes. After I replaced the cooler hoses, I noticed the oil cooler line fittings had a tendency to work loose as the hoses vibrated . Never leaked either oil or coolant, but I found noticed it when replacing the headlight on that side. Putting sealer around the fittings like that held them in place so I don't need to worry about rechecking them. Top one is super easy to check and tighten, but bottom one requires jacking up car and removing splash guard so I don't want to do that more than I have to.


1998 V70 GLT / 195k miles [10w-30 Valvoline Syn w/ Maxlife Tech + Mann W917 filter]

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620486
01/01/18 10:48 AM
01/01/18 10:48 AM
Joined: Oct 2002
Posts: 22,168
Colorado Springs
Drew99GT Offline
Drew99GT  Offline
Joined: Oct 2002
Posts: 22,168
Colorado Springs
If it's just the clamp leaking, and it's a worm gear clamp, and the hose is still intact (might not be if you've cranked on the clamp trying to get the leak to stop, you should buy a constant tension screw clamp. Napa and Oreilly have them in stock. Problem solved.

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620654
01/01/18 01:47 PM
01/01/18 01:47 PM
Joined: Dec 2016
Posts: 2,203
VA
maverickfhs Offline
maverickfhs  Offline
Joined: Dec 2016
Posts: 2,203
VA
Good luck sorting it out, if hose is intact then a screw clamp would be a good option but make sure hose is warm and you are tightening it with normal force(but not overly tightening).

During this cold. anything rubber/bolt related is a royal pain.

Plus, everything hurts like a ....


2006 Civic EX 202K/AT
2006 Acura TSX 180K/AT
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620663
01/01/18 01:58 PM
01/01/18 01:58 PM
Joined: Jan 2018
Posts: 538
San Antonio, TX
das_peikko Offline
das_peikko  Offline
Joined: Jan 2018
Posts: 538
San Antonio, TX
You need a constant tension spring clamp and a set of Mayhew 28680 pliers.

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620665
01/01/18 01:59 PM
01/01/18 01:59 PM
Joined: Apr 2012
Posts: 1,462
East Mountains, NM
4wheeldog Offline
4wheeldog  Offline
Joined: Apr 2012
Posts: 1,462
East Mountains, NM
Given the temperature, it is possible the leak is caused by something shrinking.
If it were me, I would fill the radiator and reservoir, run it until warm and recheck for the leak.
Just sayin'.

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620799
01/01/18 03:55 PM
01/01/18 03:55 PM
Joined: Jun 2003
Posts: 33,555
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,555
ME
Agree, run it until warm so stuff will be less brittle before you do "whatever".

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620858
01/01/18 04:49 PM
01/01/18 04:49 PM
Joined: Sep 2004
Posts: 7,803
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,803
Marshfield , MA
Yes, drive to the auto parts store for more coolant and maybe another clamp. Cranking on cold, brittle ABS plastic with steel tools is fraught with potential fail. Maintaining coolant levels is all you need to do with this until the weather gets warmer


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4620882
01/01/18 05:13 PM
01/01/18 05:13 PM
Joined: Dec 2017
Posts: 417
Massachusetts
VeryNoisyPoet Offline OP
VeryNoisyPoet  Offline OP
Joined: Dec 2017
Posts: 417
Massachusetts
Hose is only 4 years old and still feels flexible even at these freezing temps. It was still really leaking with zero pressure. Took the hose off and figured out why. Hose clamp was a little tired looking, and there's a design / manufacturing flaw in this (presumably) aftermarket radiator. Look at the ridge left over from the plastic molding process. There's one on top and underneath, and they run all the way along the hose nipple. Suddenly there's a leak path if the hose and clamp loosen, shrink, or shift even a little. I'm more surprised it didn't leak worse/sooner!



I painstakingly shaved the ridges down with 400 grit sandpaper until I can't feel them there anymore. Hopefully that gives a smooth surface to help the hose seal. I'm warming up inside now, then I'm headed back out there to fill it up and see if it holds water.



1998 V70 GLT / 195k miles [10w-30 Valvoline Syn w/ Maxlife Tech + Mann W917 filter]

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."
Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4621096
01/01/18 07:51 PM
01/01/18 07:51 PM
Joined: Jun 2003
Posts: 33,555
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,555
ME
Nice find! RTV is your friend if you don't get this sorted.

Re: Coolant leak - happy new year to me! [Re: VeryNoisyPoet] #4621155
01/01/18 08:42 PM
01/01/18 08:42 PM
Joined: Dec 2017
Posts: 417
Massachusetts
VeryNoisyPoet Offline OP
VeryNoisyPoet  Offline OP
Joined: Dec 2017
Posts: 417
Massachusetts
Got the hose secured again. The OEM Volvo clamp has seen better days, but the econo-pack screw clamps do not inspire confidence either, so I used both. A hairdryer worked great to warm hose and nipple to 90F / 32C to soften things up before tightening the clamps. It held water without any signs of leaking for about two hours now, so I'm confident I have a temporary repair that won't lose the better part of a quart overnight like it did before.




Since it is now 3F / -16C outside and I like to keep my fingers unfrozen, I'm done for the night. I'll take it for a test drive tomorrow if I don't see any signs of leakage after all that time.


1998 V70 GLT / 195k miles [10w-30 Valvoline Syn w/ Maxlife Tech + Mann W917 filter]

"Use yah blinkah!"

"Be nice. The alternative involves an air horn and 7000 lumens of high beam."
Re: Coolant leak - happy new year to me! [Re: eljefino] #4621169
01/01/18 08:52 PM
01/01/18 08:52 PM
Joined: May 2005
Posts: 2,249
Toronto, Canada
George7941 Offline
George7941  Offline
Joined: May 2005
Posts: 2,249
Toronto, Canada
I had a bad experience with RTV on a rad hose. This was on a Ford 4.9 "Big Six" engine where the thermostat housing end onto which the top rad hose slides on has no barb. There is only friction retaining the hose on. RTV made it slippery and the hose slid off when the pressure built up to the rated 15 psi in the cooling system. I put the hose back on after wiping the RTV off and did not have any further issues.


2006 GMC Sierra 4.3l, NV3500,G80 , Mobil 1 5W30, Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.
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