Skip to main content ↑ ↓
Topic: Radiator showing signs of leaking on upper tank (Read 900 times) previous topic - next topic

Radiator showing signs of leaking on upper tank

So was doing my normal looking touching and shaking on the GV today and noticed coolant leaking from the top tank, not sure if tightening the bolts will help, but going to try that.
It's not a big leak, there is no pudding on the ground. So was thinking after trying to tighten the bolts if maybe some Barr's would be worth trying.
I would be surprised if this was not the original radiator. Any thoughts
Thanks Andy.
Andy & Eileen
MONTROSE COLORADO
1992 U300  40' 6V92 TA
2016 4 Runner
1998 Jeep Grand cherokee

1998 Jeep Grand Cherokee) Build # 4135 Skp# 122921

Re: Radiator showing signs of leaking on upper tank

Reply #1 –
MOT said that the first thing they do for a radiator leak is put Bar's Leak in the radiator and drive it to operating temp.  That would more than likely take care of a small leak.  It is a cheap try and it worked for me.
Chappell & Mary
36' 2004 Foretravel U270 build #6273

Re: Radiator showing signs of leaking on upper tank

Reply #2 –
Andy mine was leaking at one of the tanks. Snugged the bolts up and added Bars Leak,  not another drop of a leak since. That's was 4 years ago. If you have a water filter be sure and close the valves for a while so it won't catch the Bars leak. I cut the water filter apart 2 years later,  it had Bars leak in it but was NOT clogged up in the least. 👍
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Radiator showing signs of leaking on upper tank

Reply #3 –
So the next ? Is how much Barr's, does it go by gallons.
Andy & Eileen
MONTROSE COLORADO
1992 U300  40' 6V92 TA
2016 4 Runner
1998 Jeep Grand cherokee

1998 Jeep Grand Cherokee) Build # 4135 Skp# 122921

Re: Radiator showing signs of leaking on upper tank

Reply #4 –
Quote from: Andy 2 –
So the next ? Is how much Barr's, does it go by gallons.
James T at FOT said 3 cans for a ism.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Radiator showing signs of leaking on upper tank

Reply #5 –
Copy that, I will check with Detroit and see what they say for 6/92. Thanks for the help guys ^.^d
Andy & Eileen
MONTROSE COLORADO
1992 U300  40' 6V92 TA
2016 4 Runner
1998 Jeep Grand cherokee

1998 Jeep Grand Cherokee) Build # 4135 Skp# 122921

Re: Radiator showing signs of leaking on upper tank

Reply #6 –
Quote from: Andy 2 –
Copy that, I will check with Detroit and see what they say for 6/92. Thanks for the help guys ^.^d
FYI: Last fall I did a complete drain, flush (Wolf method), and refill. Mine took 18 gallons to fill.

see ya
ken
The selected media item is not currently available.ken & dori hathaway & Big Agnes
🍺1992 U300 GrandVilla WTBI #4150 FOT FBP 2011
✨6V-92TA DDEC Parlor Coach 350HP Series 92
🏁2011 Nissan XTerra Pro-4X

Re: Radiator showing signs of leaking on upper tank

Reply #7 –
Where are the valves to close off the water filter?? We have a Cummins ism450
The selected media item is not currently available.Keith & Jo
2003 U320T 4025 PBBS Designer series
Build 6203    Cummins 500hp
2000 U320 4010 WTFE / Build 5762 —Sold—
Motorcade #18070   
Pasadena, Texas
2015 Jeep Wrangler Sahara-Sunset Orange pearl coat
Don't argue with a fool, people watching might not be able to tell the difference.

Re: Radiator showing signs of leaking on upper tank

Reply #8 –
ours is on the thermostat housing, next to the base of the filter, small black knob....
Justin & Cathy Byrd
1995 U280 "Old Faithful"
36' Build #4673
C8.3 Cummins
Allison MD3060R 6 speed - retarder
Powertech 10KW  4cyl Kubota

Re: Radiator showing signs of leaking on upper tank

Reply #9 –
Quote from: Andy 2 –
So the next ? Is how much Barr's, does it go by gallons.
On the bottle it said up to 4 gallons.  I put 4 bottles in mine.  my radiator wholes  about 15 gallons.  I did not cut off the valves at the filter nor was I told to.  I will change the filter after a few runs.  My cut off valves are on each side of the filter.
Chappell & Mary
36' 2004 Foretravel U270 build #6273

Re: Radiator showing signs of leaking on upper tank

Reply #10 –
When I replaced my radiator, I also removed the upper tank and found a thick sheet of rust on the back side.  It would not have been long before it would have rusted through.  I cleaned it up and spread a layer of JB Weld on it as you would Bondo.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Radiator showing signs of leaking on upper tank

Reply #11 –
Be care full about shutting off the coolant filter on the M11.
The selected media item is not currently available.Bob & Faith Rozek
1997 U320 40'
Xtreme Remodel
2010 Scion XD

Re: Radiator showing signs of leaking on upper tank

Reply #12 –
I put 3 bottles in mine. If you use the tablets you can crush them before you add them makes them desolve quicker.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country
 

Re: Radiator showing signs of leaking on upper tank

Reply #13 –
FT Service just added 5 bottles to my M-11 system.  Bar's Leaks worked fine for years until I changed coolant, then a small leak started-no puddle on the ground.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R