Zinc in Radiator

Discussion in 'Classic Mustang Specific Tech' started by Pbum5, Feb 22, 2007.


  1. Pbum5

    Pbum5 Member

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    Zinc in Radiator

    Anyone drop in a nugget of Zinc in their radiator?

    Does it really work to help with corrosion?
    #1
  2. 66forfun

    66forfun Member

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    yup, the dingleberry came attached to the cap. it seems to be working, been there for 2 years and is under heavy attack. $30 to protect my $389 rad along with all the other wetted parts, well worth it.
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  3. krash kendall

    krash kendall Active Member

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    Zincing the coolant system? Why didn't I think of that!? We use them on our boats all the time in salt water to prevent corrosion between dissimiliar metals.

    Here's a primer for those who don't know what the process is. Galvanic action is caused when two diassimiliar metals are exposed to an electrolyte and an electrical current or field. The less noble metal will be sacrificed as it is stripped of its electrons. The further apart on the noble scale the metals are, the faster the degradation.

    In a car you have:

    1. Dissimiliar metals - steel, aluminum

    2. Electrolyte - old, acidic coolant

    3. Electrical current or field - Ground strap, alternator, sensors, ignition, short curcuits

    Another tip I recently heard was to get those paper ph level strips to periodically test the coolant for acidity. Once it starts to rise, change it out.

    I'm fairly cautious about bad coolant now since my aluminum heater core and rad dissolved in my F-150. No need for me to post those pics again.
    #3
  4. 1320stang

    1320stang Founding Member

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    Yeah, they make rad caps with an anode attached.
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  5. CochinoFilipino

    CochinoFilipino Founding Member

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    I'm thinking I'll go with a waterless coolant when my new engine goes in.
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  6. ponyX2

    ponyX2 New Member

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    Waterless coolant WITH a zinc anode.....very sneaky:lol:
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  7. 1320stang

    1320stang Founding Member

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    I'm thinking bypassing the electrolyte and just make it air cooled.....
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  8. truck90278

    truck90278 New Member

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    You can actually measure the voltage differential by using a digital voltmeter. On newer vehicles (and would be applicable to our older ones, Ford recommends a maximum of ~ .4 volts. A shop I deal with had a vehicle that they replaced the heater core 3 times in 4 months due to electrolysis. When they measureed the voltage it was .7volts. simply ground one end of the voltmeter and (assume you have a scale small enough) stick the probe into the water.
    #8
  9. 66HertzClone

    66HertzClone New Member

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  10. hsr

    hsr Member

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  11. CochinoFilipino

    CochinoFilipino Founding Member

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  12. Pbum5

    Pbum5 Member

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    I like that thing from Jegs..
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