RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Workhorse and Chevrolet Chassis Motorhome Forum
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 01-10-2019, 10:20 AM   #1
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Coolant usage?

Any one noticed having any coolant usage in their 8.1ís? Iíve sent an oil sample off last yr and specifically ask to look for coolant and none was found. Occasionally smell a little at start up canít find any leaks looked all over very closely. It has been like this since Iíve owned at 21,000 miles now 31,000. I know some of these 8.1 like to consume oil too.
__________________

__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 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 01-10-2019, 10:26 AM   #2
Senior Member
 
Twomed's Avatar
 
Monaco Owners Club
Join Date: Oct 2009
Location: On the road
Posts: 1,602
Number one overlooked culprit...radiator cap. Cheap fix, at least worth a try. Buy a good one, Stant or similar.
__________________

__________________
Happy Trails,
06 Dynasty Countess III ISL//3060
07 Hummer H3// Suzi 650 Thumper
Twomed is offline   Reply With Quote
Old 01-10-2019, 10:29 AM   #3
Senior Member
 
Mr_D's Avatar
 
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 35,737
You probably have a leak that is just enough to smell but is evaporating before it drips. You need to look for the telltale markings that the fluid leaves.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 01-10-2019, 10:32 AM   #4
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Coolant usage?

New Radiator cap all the radiator hose clamps snugged canít find any signs of leakage But if I get a little smell it has to be leaking somewhere
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-10-2019, 11:19 AM   #5
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 8,333
The 8.1 when it first came out had a problem with the freeze plugs ( on the bottom of the engine) leaking.

I bought a 2003 GMC 3/4 ton truck that had that problem and the dealer corrected it under warranty. I could smell it occasionally until they fixed it.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS

Don't know where I'm going, spose I'll get there anyway.
Arch Hoagland is offline   Reply With Quote
Old 01-10-2019, 11:52 AM   #6
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Quote:
Originally Posted by Arch Hoagland View Post
The 8.1 when it first came out had a problem with the freeze plugs ( on the bottom of the engine) leaking.

I bought a 2003 GMC 3/4 ton truck that had that problem and the dealer corrected it under warranty. I could smell it occasionally until they fixed it.


Iíll certainly check that out
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-10-2019, 03:45 PM   #7
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Quote:
Originally Posted by tmw188 View Post
Iíll certainly check that out


Thinking back I believe I already looked at the freeze plugs on both sides but Iíll have to look at them again.
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-10-2019, 06:35 PM   #8
Senior Member
 
Join Date: Oct 2014
Location: Cypress River Manitoba
Posts: 219
My GMC mechanic son says that Dexcool seems to disappear without a trace. To the point where they will top up a customer's tank and not say anything, because all it does is get people worried about non existent leaks.
Stan
__________________
2004 Itasca Sunrise W22 chassis GM 8.1 Allison 1000 Towing a 2007 Chevy Cobalt four wheels down.
Switchflicke is offline   Reply With Quote
Old 01-10-2019, 07:54 PM   #9
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Quote:
Originally Posted by Switchflicke View Post
My GMC mechanic son says that Dexcool seems to disappear without a trace. To the point where they will top up a customer's tank and not say anything, because all it does is get people worried about non existent leaks.
Stan


Are you saying it disappears for no reason or as you say without a trace to where there is no evidence that it had leaked? Asking because you said worried about non existent leaks. Please clarify.
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-11-2019, 07:55 AM   #10
Senior Member
 
Join Date: Oct 2014
Location: Cypress River Manitoba
Posts: 219
The Dexcool disappears for no reason.
They certainly have the technology to detect leaks and when they do check a vehicle that is a bit low in coolant, the detector equipment comes up with - no leaks found.
Stan
__________________
2004 Itasca Sunrise W22 chassis GM 8.1 Allison 1000 Towing a 2007 Chevy Cobalt four wheels down.
Switchflicke is offline   Reply With Quote
Old 01-11-2019, 08:35 AM   #11
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Quote:
Originally Posted by Switchflicke View Post
The Dexcool disappears for no reason.
They certainly have the technology to detect leaks and when they do check a vehicle that is a bit low in coolant, the detector equipment comes up with - no leaks found.
Stan


That is very interesting. I did a flush and fill last yr. and installed DexCool again. Maybe a more modern coolant would have been better? Has anyone replaced their DexCool with a newer version?
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-11-2019, 12:14 PM   #12
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 8,333
Quote:
Originally Posted by tmw188 View Post
That is very interesting. I did a flush and fill last yr. and installed DexCool again. Maybe a more modern coolant would have been better? Has anyone replaced their DexCool with a newer version?
My Workhorse dealer replaced my Dexcool with a green coolant several years ago, don't know which brand. He is not a fan of Dexcool.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS

Don't know where I'm going, spose I'll get there anyway.
Arch Hoagland is offline   Reply With Quote
Old 01-11-2019, 12:30 PM   #13
Senior Member
 
tmw188's Avatar


 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 3,972
Send a message via AIM to tmw188
Coolant usage?

Quote:
Originally Posted by Arch Hoagland View Post
My Workhorse dealer replaced my Dexcool with a green coolant several years ago, don't know which brand. He is not a fan of Dexcool.


Did he say why? The old green coolant from the 90ís and earlier. That has less modern corrosion inhibitors. I do know you should not mix the old green stuff with Orange DexCool.
Google antifreeze colors and mixing.
__________________
2005 National Dolphin 6376LX, W-24, 8.1 Vortec, 2100 Allison MH 5 speed, Safe T Plus, Toyo tires, TireSafeGuard TPMS, 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo
tmw188 is offline   Reply With Quote
Old 01-11-2019, 12:44 PM   #14
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 8,333
Quote:
Originally Posted by tmw188 View Post
Did he say why? The old green coolant from the 90ís and earlier. That has less modern corrosion inhabiters.

Don't remember exactly what he said other than there were problems with Dexcool.

I don't think he was using old 90's coolant in 2013.....
__________________

__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS

Don't know where I'm going, spose I'll get there anyway.
Arch Hoagland is offline   Reply With Quote
Reply



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
Coolant usage Aqua Hot waterboy10 Entegra Owner's Forum 8 02-06-2016 06:01 PM
Normal Coolant Usage? Gadget Man Caterpillar Engine Forum 32 11-06-2015 04:22 PM
A little concerned about coolant usage. brobox Entegra Owner's Forum 63 10-23-2015 06:43 AM
New coolant, coolant filter?? smlranger Cummins Engines 11 04-18-2014 07:01 AM
Coolant Usage takepride Alpine Coach Owner's Forum 14 10-13-2009 11:45 PM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:57 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.