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AikenRacer's avatar
AikenRacer
Explorer
May 19, 2014

Red or blue antifreeze in Cummins Diesel

I need to find out if I have red or blue antifreeze in my engine. The Cummins dealer said not to mix the two. They said that most mh's have red but some have blue. When I look in my fill tank it basically looks clear. The mh is a 2012 with a 450 hp diesel ISL. Does anyone else with a similar motor know what color antifreeze they have. I know I can crawl underneath and find a bleed somewhere but I was trying not to do that...Thanks!
Class A
  • Laman's avatar
    Laman
    Explorer
    May 20, 2014
    georgeb727 wrote:
    The Blue turns clear after it has been heated.

    )I have got about 10,000 miles on blue coolant (Fleetgard non-OAT) and it is still blue.
  • sailor_lou's avatar
    sailor_lou
    Explorer
    May 20, 2014
    Johnny G1 wrote:
    Why ask the chassis guy, phone Cummins and get the proper answer. Color has nothing to do with it.


    Color has little to do with it, but Cummins probably has no idea because they shipped the engine to the chassis manufacturer without coolant. The chassis manufacturer then installs the engine, rad, hoses, overflow tank, etc. and then adds the coolant.

    Lou
    05 Travel Supreme Envoy
  • Johnny_G1's avatar
    Johnny_G1
    Explorer
    May 20, 2014
    Why ask the chassis guy, phone Cummins and get the proper answer. Color has nothing to do with it.
  • eheading's avatar
    eheading
    Explorer
    May 20, 2014
    Moisheh is right. I always thought red coolant was the CAT super coolant that didn't need SCA's. My new Freightliner chassis came with red coolant, but Freightliner says they can color ethlene glycol any color and that is what it is. When I checked the SCA's they were just about right. So, bottom line, the only way to be sure what is in your cooling system is to ask the chassis manufacturer.

    Ed
  • wolfe10's avatar
    wolfe10
    Explorer
    May 20, 2014
    Being a 2012 model, call your chassis maker with your VIN. They can look it up.
  • moisheh's avatar
    moisheh
    Explorer
    May 20, 2014
    The color means nothing. There should be a label somewhere near the rad telling you which coolant was installed.

    Moisheh
  • wolfe10's avatar
    wolfe10
    Explorer
    May 20, 2014
    Your CHASSIS maker, not engine maker or coach maker specs and installs the coolant.
  • Twomed's avatar
    Twomed
    Explorer
    May 19, 2014
    Spartan??? Freightliner??? or??? You really need to call the builder and see what they put in there.
  • st687's avatar
    st687
    Explorer
    May 19, 2014
    Call the Mfg of the coach and ask them what they put in the cooling system.

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