Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 08-30-2022, 11:22 AM   #1
Member
 
jmfixitman's Avatar
 
Monaco Owners Club
Join Date: Nov 2021
Posts: 74
Radiator/Coolant Stop Leak Products

Ok, I know this is a fiercely debated topic for diesel engines in general. But has anyone successfully used any stop leak products in their DP coolant system?

In my Ford F250 with the 6.4L Powerstroke I reluctantly used K-Stop when it was recommended by a radiator manufacturer for a small leak I was having, and also to my surprise it fixed an issue regarding a little oil in my coolant tank. And it has been running fine now for several years (Towing a fifth wheel, etc.) without any other possible related issues.

So now with a heavy-duty diesel engine/system in a Class A motorhome, has anyone used that product or another? I've heard Cummins has approved Zerex sealer for use in Cummins engines, but not sure if that's the case?
jmfixitman is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-30-2022, 12:39 PM   #2
Senior Member
 
Domo's Avatar
 
Join Date: Sep 2018
Location: Fort Myers, FL
Posts: 1,516
I'm glad you had luck?

Oil in coolant - eeek! - I hope you tested your oil in case your have coolant in the oil as well.

Quite frankly - with our MH we don't "patch" anything that can result in chassis/motor/tranny components failing. Just too expensive and we'd lose too many style points on the side of the highway waiting for the proverbial tow truck.
__________________
2008 Phaeton 36QSH, Safe-t-Plus, Quadra Bigfoot
2017 Jeep Cherokee Trailhawk w/ flat tow wiring mod.
Blue ox, BrakeMaster + BrakeAway, diode lights and charge.
Domo is offline   Reply With Quote
Old 08-30-2022, 12:47 PM   #3
Senior Member
 
Join Date: Jul 2014
Posts: 33,284
In large diesels, oil in the coolant is typically a failing oil cooler. The oil is cooled with coolant.
Oil psi is 60 and coolant is 15 psi. A slight leak let's oil push out but not let coolant get into the oil.

The fix is a new cooler.
twinboat is offline   Reply With Quote
Old 08-30-2022, 12:54 PM   #4
Senior Member
 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Aug 2019
Location: Salem, OR
Posts: 937
Hard to recommend any brand of stop leak. They work by literally plugging any hole small enough to catch stop leak material from passing.

Good example of small holes to be plugged is your heater core. Stop leak is known to plug the tubes thru your core, restricting or even stopping flow. You find out the following winter with less or no heat.

Maybe better to fix the leak.
code2e is offline   Reply With Quote
Old 03-20-2023, 01:26 AM   #5
Senior Member
 
Join Date: Apr 2022
Location: Renton-Highlands,Wa./HB,Ca./Fujieda-Japan
Posts: 604
Going to depend on how big the crack/hole is. But the only one that works well consistently is...

https://irontite.com/p/8197-all-weat...al-pint/v/8197

The great thing about this stuff is you put it in and leave it in. It dissolves to a micro-emulsion that doesnít clump or settle so there is nothing there to clog your system. Activation only happens when both heat and air, under mild pressure, is encountered by the solution.
__________________
94 Southwind Storm 28ft - 454TBI w/4L80E
VIN#1GBJP37N4R3314754
Flight System G-Man 360 generator man (PM me)
1972VWbus is offline   Reply With Quote
Old 03-20-2023, 05:59 AM   #6
Senior Member
 
Argosy's Avatar
 
Join Date: May 2004
Location: MI
Posts: 1,798
I'd be most worried about the coolant filter. I've never cut one open to see how fine the medium is but it seems like any stop leak would plug the filter, or drastically reduce flow, if it actually works.
Argosy is offline   Reply With Quote
Old 03-20-2023, 06:52 AM   #7
Senior Member
 
Join Date: Feb 2021
Posts: 174
Quote:
Originally Posted by Argosy View Post
I'd be most worried about the coolant filter. I've never cut one open to see how fine the medium is but it seems like any stop leak would plug the filter, or drastically reduce flow, if it actually works.
Been working on various vehicles for decades, I have never even heard of a "coolant filter" please tell me you are making this up??
98fleetwood is offline   Reply With Quote
Old 03-20-2023, 06:55 AM   #8
Senior Member
 
Join Date: Oct 2014
Posts: 6,715
Quote:
Originally Posted by 98fleetwood View Post
Been working on various vehicles for decades, I have never even heard of a "coolant filter" please tell me you are making this up??

Common on many larger diesel engines.


Just do a search for "diesel coolant filter".
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is offline   Reply With Quote
Old 03-20-2023, 07:16 AM   #9
Senior Member
 
Join Date: Feb 2021
Posts: 174
Quote:
Originally Posted by wolfe10 View Post
Common on many larger diesel engines.


Just do a search for "diesel coolant filter".
New to diesels. Couple years. They sure are complete different animals! I will keep learning....
98fleetwood is offline   Reply With Quote
Old 03-21-2023, 08:39 PM   #10
Senior Member
 
dons2346's Avatar
 
Country Coach Owners Club
Join Date: Dec 2010
Posts: 7,260
Have a friend that had a pretty serious leak. He dumped a couple of teaspoons of black pepper into the cooling system. That was over a year ago and no leak to date
__________________
Don
2002 Country Coach Intrigue
dons2346 is online now   Reply With Quote
Old 03-21-2023, 09:38 PM   #11
Senior Member
 
tuffr2's Avatar
 
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 12,240
I had good luck with both black pepper and stop leak products in gas car engines. But in a big diesel engine - that is above my pay grade.

Good luck getting that leak stopped.
tuffr2 is offline   Reply With Quote
Old 03-22-2023, 06:27 AM   #12
Senior Member
 
rssnape's Avatar
 
Join Date: Oct 2011
Location: Central, SC
Posts: 671
I would investigate if you can determine the location of the leak before I put stop leak in. If itís an oil cooler or radiator I think I would repair replace those. Stop leak would be my last choice. It may or may not stop the leak, but yet could cause other problems that could add to the repair bill.
rssnape is offline   Reply With Quote
Old 03-22-2023, 08:09 AM   #13
Senior Member
 
Join Date: Oct 2010
Posts: 398
Several years ago on my trip to Florida, I developed a leak in the radiator. I used the Zerox stop leak and when I got back up north to my home, I flushed the cooling system and replaced the radiator. That was i 2012 and the motor home is still on the road today. My opinion, if you use it, flush the cooling system and then locate the leak.
__________________
Kent and Sally Lunda 2006 Newmar Mountain Aire 4141 4 Slide 400HP Cummins, Spartan Chassis, Hydro Hot 2016 Ford Explorer (Toad)
Living the dream until the money runs out.
Kjlunda is offline   Reply With Quote
Old 03-22-2023, 10:22 AM   #14
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 4,714
I developed a heater core leak that I was able to bypass for 2-3 years but eventually, tired of replacing antifreeze after every trip of my DP.

So I bought a bottle of Bars Leak Stop Leak and poured that into the surge tank. Then I time controlled opening the heater control so the heater would be slowly warmed.

Surprisingly, the leak stopped. Even though the heater core is 34' away from the engine.

I am careful to slowly open the temp control valve so the core heats up (and expands) slowly. Not sure that's needed but so far so good. Added the stop leak in 4-'21 and have used the heater for hours over many days of travel since then (full timer-snow bird). This last trip I used it all day every day after leaving NE Oregon, stopped needing the dash heat in Beatty, NV.

So yes, it is working for me.
__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : https://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Reply

Tags
coolant, leak, radiator



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
stop, Stop, STOP! 5er2life Trailer Towing and Tow Vehicles Discussion 14 05-16-2022 05:00 AM
New Products: Steele Rubber Products Replacement RV Seals RVupgrades.com Vendor Spotlight (Deals, Announcements & More) 0 05-04-2021 03:13 PM
Leaking engine coolant. Error message saying low engine coolant. Radiator cap local Wayrig Class A Motorhome Discussions 6 09-28-2020 09:34 PM
8.1 with leaking radiator , add stop leak? Triatik Workhorse and Chevrolet Chassis Motorhome Forum 19 12-10-2018 01:53 PM
Radiator Stop Leak namwob RV Systems & Appliances 5 04-11-2010 01:53 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 11:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.