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 07-09-2022, 09:06 PM   #1
Senior Member
 
Join Date: Jul 2016
Posts: 450
How Do I tell what type of Coolant is in my coach

I just purchased a coach with an ISL 400 Cummins. It was very well cared for but the original owner has passed so I am lacking some information.

Is there a way to tell what Type of coolant is in the system? I am trying to determine if it is an OAT type or If I need to check SCA levels.

There are some service records I just have not found any info on this yet.

I might check with Blackstone labs to see if they can test a sample.
thanks for any info.
__________________
2006 Dynasty 38' Bishop III Tag.
Rusty Kramer 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 07-09-2022, 09:12 PM   #2
Senior Member
 
TB673's Avatar
 
Join Date: Sep 2018
Location: Cleveland, Ohio
Posts: 474
Quote:
Originally Posted by Rusty Kramer View Post
I just purchased a coach with an ISL 400 Cummins. It was very well cared for but the original owner has passed so I am lacking some information.

Is there a way to tell what Type of coolant is in the system? I am trying to determine if it is an OAT type or If I need to check SCA levels.

There are some service records I just have not found any info on this yet.

I might check with Blackstone labs to see if they can test a sample.
thanks for any info.

Is there a reason that you haven't contacted a Cummins Dealer?


Tim
__________________
2015 Silverado CC DRW Duramax
2006 Hitchhiker Champagne
TB673 is offline   Reply With Quote
Old 07-09-2022, 09:28 PM   #3
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 21,122
I think the best way is to just pull a sample. They should be able to tell you what type of coolant and the condition both it and the motor are in.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
Dutch Star Don is offline   Reply With Quote
Old 07-10-2022, 01:57 AM   #4
Senior Member
 
153stars's Avatar
 
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 6,151
If its green pretty good chance you need to test with strips, I know not green is 100% non OAT better than 50/50 . Test with strips for nitrate and moly levels they are cheap by 3 pack. Check coolant filter if a blank/ non sca has been put in. Look for label stating OAT has been added near coolant tank.
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
153stars is offline   Reply With Quote
Old 07-10-2022, 07:35 AM   #5
Senior Member
 
Alpine Owners Club
Join Date: Oct 2017
Location: Sugar Grove IL
Posts: 268
When your coach was built, OAT was not commonly used in new vehicles. My 2003 ISL had conventional antifreeze. I know you said it was well maintained, but I would suggest you change all the fluids and filters to give you a new base line starting out. Engine, coolant and transmission (there is a new spec. for synthetic trans fluid that you should included in your upgrade -T668). As mentioned earlier, the water filter should be a filter only, no additives version, if it has had OAT or you ae switching to it.
__________________
Mack Mover
2003 Alpine 40 MDTS
400 ISL
Bruce Anthon is offline   Reply With Quote
Old 07-10-2022, 07:48 AM   #6
Senior Member
 
Join Date: Oct 2014
Posts: 5,837
When I buy a coach at that age with (16 years old)no/sketchy records, I ASSUME that all fluids need to be changed and do it.


That way I have absolute knowledge that a low-cost fluid change will not cause expensive damage or leave me on the side of the road.


And, even the long-life coolants are basically 6 year coolants. I would flush and fill with one of the new generation OAT based Fleetguard products since you have the Cummins engine and Fleetguard is Cummins's in-house brand.


If you are referring to a short-term "top off", just use distilled water.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is online now   Reply With Quote
Old 07-10-2022, 07:56 AM   #7
Senior Member
 
znt1186's Avatar
 
Join Date: Nov 2014
Posts: 1,047
Agree with Wolfe10. New to me coach, the first top is to a qualified shop to change all fluids, belts, etc. and do a complete check of everything. More or less starting with a clean slate. I keep maintenance records from then until.....
__________________
Zeb and Teena
2005 Mandalay, 2013 Ford Edge
znt1186 is offline   Reply With Quote
Old 07-10-2022, 08:03 AM   #8
Senior Member
 
Surf Fisher's Avatar
 
Monaco Owners Club
Join Date: Jan 2022
Posts: 118
Blackstone does not offer coolant analysis, but JG Lubricant does.

If it's green, chances are that it is the old style EG coolant. If it's some other color then it may be OAT or not.
__________________
2006 42 FT Monaco Dynasty Countess III (Codymobile)
2002 40 FT Monaco Windsor PBT/Owned for 18+ Years
1992 36 FT Airstream Landyacht (bought 2001)
Surf Fisher is offline   Reply With Quote
Old 07-10-2022, 08:34 AM   #9
Senior Member
 
Join Date: Jul 2016
Posts: 450
Thanks to all. Yes I am in the process of ordering all filters and I will change everything. I may bring it to a shop for the coolant. That is the only fluid I have not ever done.
I think I will send a sample to JG.

Thanks to everyone.....

RK
__________________
2006 Dynasty 38' Bishop III Tag.
Rusty Kramer is offline   Reply With Quote
Old 07-10-2022, 09:31 AM   #10
Senior Member
 
Country Road's Avatar
 
Join Date: May 2021
Location: Brenham, Texas
Posts: 1,102
Quote:
Originally Posted by Dutch Star Don View Post
I think the best way is to just pull a sample. They should be able to tell you what type of coolant and the condition both it and the motor are in.
You are correct if you want to find out exactly what’s in the cooling system.

The problem I have with that is with an older vehicle where you aren’t the original owner, there’s no telling what someone used in the system.

The safest way would be to do an engine cooling system flush and reinstall anti freeze according to the engine manufacturer’s specs. Just my thoughts.
__________________
Eddie and Jomaye, Retired
2018 Newmar Ventana 4369
2021 Jeep 4 dr Wrangler
Country Road is offline   Reply With Quote
Old 07-10-2022, 02:38 PM   #11
Senior Member
 
Join Date: Jan 2009
Posts: 4,083
Quote:
Originally Posted by Country Road View Post
You are correct if you want to find out exactly what’s in the cooling system.

The problem I have with that is with an older vehicle where you aren’t the original owner, there’s no telling what someone used in the system.

The safest way would be to do an engine cooling system flush and reinstall anti freeze according to the engine manufacturer’s specs. Just my thoughts.
Thank you! Was wondering why that had not been mentioned yet.

Am I being naive in thinking it shouldn't be that difficult to find the info in a service manual for that particular year and engine? Posting the chassis year on here might help to narrow this down.
__________________
03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
Mudfrog is offline   Reply With Quote
Old 07-10-2022, 05:55 PM   #12
Senior Member
 
Winemaker2's Avatar
 
Join Date: Nov 2006
Location: Western NY
Posts: 5,308
I would not rely on Cummins recommendations alone.
Check with Chassis mfg as they are the ones that put the cooling system together. When I was trying to confirm what coolant to use in my Freightliner w Cummins ISB engine FL had a very different recommendation than Cummins due to the sensors they installed in the system.
__________________
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
Winemaker2 is offline   Reply With Quote
Old 07-10-2022, 08:42 PM   #13
Senior Member
 
Join Date: Jul 2016
Posts: 450
Thanks, I am going to try to check with the strips. I plan to flush the system.

The Monaco Roadmaster chassis was built by the Monaco Coach company in Oregon back in the day.
__________________
2006 Dynasty 38' Bishop III Tag.
Rusty Kramer is offline   Reply With Quote
Old 07-10-2022, 09:08 PM   #14
Senior Member
 
Join Date: Jan 2009
Posts: 4,083
I don't know much about diesel maintenance but I am trying to learn a bit and maybe help while I'm at it. This old thread may or may not be helpful.

Coolant-change-isl-400
__________________
03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
Mudfrog is offline   Reply With Quote
Reply

Tags
coolant



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
Which dictates, the type of RV or type of Toad? Vagabond51 Toads and Motorhome Related Towing 5 02-02-2022 07:20 PM
Replace truck type wiper blades with car type nightwatch MH-General Discussions & Problems 4 11-23-2016 12:23 PM
DirecTV "Dish Type" and "Switch Type" for KVH R4SL gdarnell Technology: Internet, TV, Satellite, Cell Phones, etc. 14 02-03-2013 09:48 AM
How to tell type of radiator fluid. RCtime Winnebago Industries Owner's Forum 3 07-01-2008 02:42 PM
How do I tell what type of shocks I have. rick_od Workhorse and Chevrolet Chassis Motorhome Forum 7 08-28-2006 05:25 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 02:29 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.