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Contaminated coolant?

Discussion in '2013-14 Shelby GT500' started by paluka21, Feb 19, 2017.

  1. paluka21

    paluka21 Well-Known Member Established Member

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    The other day I noticed what appears to be debree inside of my coolant overflow tank. From the outside above the coolant line, it appears to be a darker shade, and when inspecting inside there are little brownish colored specs stuck to the side of the plastic. In addition, there is a little debree floating on top of the coolant.
    The only modifications to my car are 3.73 gears and axle back exhaust. Motor is 100% stock minus an oil catch can and valve cover breather with check ball from CFM.
    Anyone else have this?

    [​IMG]

    [​IMG]
     
    Last edited: Feb 19, 2017
  2. paluka21

    paluka21 Well-Known Member Established Member

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    Another shot
     

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  3. jjandascog1

    jjandascog1 New Member Established Member

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    My coolant looks the same in as your pictures in my GT500. My co-workers F150 looks like that also.
     
  4. paluka21

    paluka21 Well-Known Member Established Member

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    Interesting. So perhaps the debris is from gasket material in the motor when it was built? Given the coolant system is closed, I was a little surprised to find brown specks floating on top.
     
  5. SID297

    SID297 OWNER/ADMIN Staff Member Administrator

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    Have you ever added anything to the cooling system? If you get the debris on your fingers is it chalky or gritty?
     
  6. paluka21

    paluka21 Well-Known Member Established Member

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    Never added anything to the coolant. I'll have to check again to see if they are chalky or gritty. I do know they smear when I wiped them on cardboard.

    I just think it's strange to have anything in a closed coolant system unless it's gasket/sealant material from the build.
     
  7. SID297

    SID297 OWNER/ADMIN Staff Member Administrator

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    Looks a bit like silicate precipitation. I didn't think Ford's Orange coolant was very susceptible to that though.
     
  8. MG0h3

    MG0h3 Well-Known Member Premium Member Established Member

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    Sid is on the right track. Maybe someone mixed coolant if you had it serviced somewhere?


    Sent from my iPhone using the svtperformance.com mobile app
     
  9. paluka21

    paluka21 Well-Known Member Established Member

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    The car hasn't been serviced, and as far as I know this is the first time the cap has been removed.
     
  10. paluka21

    paluka21 Well-Known Member Established Member

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    Doesn't Ford use silicates in their antifreeze to help bond to the aluminum in the block/heads and offer corrosion control?
     
  11. SID297

    SID297 OWNER/ADMIN Staff Member Administrator

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    Yes, but they have used them in far to high of a dose in the past.
     
  12. jjandascog1

    jjandascog1 New Member Established Member

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    Checked my friends 13' GT500 with 63K on the clock, looks the same. Mine has 45K FWIW and like previously stated looks just like yours.
     
  13. nsstang

    nsstang Nasty Style Established Member

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    I have Moroso Aluminum tanks and mine looks crystal clear. I wonder if it has anything to do with the plastic reservoir.
     

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