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09-15-2017, 04:44 PM
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#1
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Senior Member
Tiffin Owners Club
Join Date: Dec 2016
Location: Northern CA
Posts: 126
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Head Gasket Failure ISL
My head gasket failed at the rear of #6 cylinder. Gasket is protruding outward. Its in the shop and the head has been determined to also be bad. A remanufactured Cummins head will be installed. The repair shop is going to change the engine oil and filter. Does anyone know if Cummins requires the coolant to be replaced? The warranty company wants to reuse the existing coolant.
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Tony & Maryjane along with Sunny (Basset Hound)
2016 Tiffin Allegro Open Road 32SA
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09-15-2017, 06:47 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,589
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I would request a coolant analysis, if no oil it would probably be OK. I hydrocarbons present I would think you have a case for a flush and replacement.
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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09-15-2017, 08:22 PM
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#3
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Senior Member
Tiffin Owners Club
Join Date: Dec 2016
Location: Northern CA
Posts: 126
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Quote:
Originally Posted by jacwjames
I would request a coolant analysis, if no oil it would probably be OK. I hydrocarbons present I would think you have a case for a flush and replacement.
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What is the recommended time or mileage to change the coolant?
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Tony & Maryjane along with Sunny (Basset Hound)
2016 Tiffin Allegro Open Road 32SA
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09-15-2017, 11:14 PM
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#4
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Senior Member
Freightliner Owners Club
Join Date: Apr 2017
Posts: 237
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That depends on what type of coolant you're running and what your coolant analysis/testing/additive schedule has been.
Any idea what's in your system now and whether it's been checked and maintained properly?
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2008 Gulf Stream Yellowstone 40UL
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09-16-2017, 04:59 PM
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#5
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,589
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I bought my 2002 Windsor in 2008 with no maintenance records. First thing I did was take it to a Cummins shop for a complete service, they checked the coloant and said it was good.
I continued to test with the SCA strips, and changed the coolant filter annually, it always showed good but I started to get concerned in early 2015 so I took a sample and sent it to JG Lubrication for analysis. It tested as if it was new. At that point I had 102K miles on the rig.
So my advice is to test and if it test good, keep it, if not change.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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09-16-2017, 05:16 PM
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#6
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,385
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If compression has been leaking into the coolant, it will have possibly added some unwanted by-products to your coolant. For the price of new coolant, it will give you added piece of mind and also demonstrate that you are someone that takes care of their equipment.
Also, you will not have to worry about changing the coolant for a good long time.
Happy Glamping.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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09-16-2017, 11:29 PM
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#7
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,064
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No way would I spend that much money, even if it's covered by an aftermarket warranty, and not replace the coolant. I would bite the bullet and pay for new coolant.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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