School Bus Fleet Magazine Forums
Home | Profile | Register | Active Topics | Members | Search | FAQ
 All Forums
 Professional Garage
 Enter Forum: Professional Garage
 Cummins coolant
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

eshover
Senior Member

146 Posts

Posted - 11/16/2015 :  05:52:10 AM  Show Profile  Visit eshover's Homepage  Reply with Quote
My new BB All American (2016) w/6.7 Cummmins came in with Blue coolant. Our 2013's came in with pink coolant. Does anybody know if it's OK to mix them? I have been told it's OK to do so,but want to be sure.
Thoughts?
Ed

JoeHEB1
Advanced Member

498 Posts

Posted - 11/16/2015 :  06:13:37 AM  Show Profile  Visit JoeHEB1's Homepage  Reply with Quote
BB told me you can use green coolant. We have and no problem so far. Ours came with blue coolant.
Go to Top of Page

Thomasbus24
Administrator

USA
4544 Posts

Posted - 11/16/2015 :  07:04:15 AM  Show Profile  Reply with Quote
Blue Bird says that, but what will Cummins say if you have a warranty claim?
Go to Top of Page

krmvcs
Advanced Member

362 Posts

Posted - 11/16/2015 :  07:22:45 AM  Show Profile  Reply with Quote
cummins wont be a fan of any coolant that doesnt meet their spec. ive heard of warranty claims for cylinder sleeve damage being denied due to improper coolant.

check out cummins service bulletin # 3666132-07

-Ken-
Go to Top of Page

tigger2
Advanced Member

USA
469 Posts

Posted - 11/16/2015 :  08:04:48 AM  Show Profile  Click to see tigger2's MSN Messenger address  Reply with Quote
Both the pink and the blue are compatible as both use DCA's to control corrosion. The important thing to remember is the Documentation of DCA levels at every service, and adding DCA if needed. Test strips are available from several sources Fleet Rite is one. We have coolant filters installed on all of our units from the factory and use filters containing DCA to keep levels at specifications.
Go to Top of Page

JoeHEB1
Advanced Member

498 Posts

Posted - 11/16/2015 :  09:56:11 AM  Show Profile  Visit JoeHEB1's Homepage  Reply with Quote
quote:
Originally posted by Thomasbus24

Blue Bird says that, but what will Cummins say if you have a warranty claim?


You have a point there, I better ask Cummins. But surely BB dealer won't steer us wrong, would they? LOL...
Go to Top of Page

dferrell
Senior Member

102 Posts

Posted - 11/16/2015 :  11:49:30 AM  Show Profile  Reply with Quote
Here is a Blue Bird Service Bulletin that explains the Cummins coolants:
http://westernbus.com/wp-content/uploads/2014/11/Service-Update-SU1403-Cummins-Coolant-in-Cummins-Engines-10-22-14.pdf
Go to Top of Page

eshover
Senior Member

146 Posts

Posted - 11/17/2015 :  2:20:20 PM  Show Profile  Visit eshover's Homepage  Reply with Quote
I just talked to the Cummins dealer here and they said you have to use the same color coolant as what the engine came with. Why in the world did Blue Bird use different coolants in the same engine?
Go to Top of Page

OxDiesel-Doc
Active Member

25 Posts

Posted - 11/17/2015 :  2:53:01 PM  Show Profile  Visit OxDiesel-Doc's Homepage  Reply with Quote
Blue Bird uses what ever costs the least at time of manufacturing...
Go to Top of Page

JRob
Advanced Member

207 Posts

Posted - 11/17/2015 :  3:07:03 PM  Show Profile  Visit JRob's Homepage  Reply with Quote
Blue Bird changed from the "Pink" to the "Blue" because there was too much confusion between Red coolant and the pink.....OK that makes it sound even more confusing :-)

Bottom line is they were having issues with people mixing coolants that were not compatible because of color similarity vs. people actually checking on the chemical make up.

Going to the Blue made it easier to pinpoint exactly what to use.

Coolant color is NEVER the way to determine what is correct. Always review what was used OE and then use coolant meeting the same chemical composition and ASTM or SAE testing standards.

A little homework will save a lot of headache.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
 


School Bus Fleet Magazine Forums © 2022 School Bus Fleet Magazine Go To Top Of Page
This page was generated in 0.07 seconds. Snitz Forums 2000