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    Thread: What would too much coolant in your car do?

    1. 01-04-2008 06:01 PM #1
      I know too little wont cool your car enough and generally it would overheat, but what would too much coolant cause?

    2. Member DubPhreek's Avatar
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      Apr 17th, 2003
      89 Cabriolet, 90 Westfalia, 91 Gti
      01-04-2008 06:02 PM #2
      are you speaking too much volume as in pouring 2 gallons into the car,

      or are you talking about incorrectly mixing the coolant ratios?

    3. Member
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      Aug 22nd, 2004
      clifton, Nj 07011
      01-04-2008 06:02 PM #3
      messy overflow

    4. Senior Member ratdub's Avatar
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      Jan 16th, 2005
      hamilton township, nj
      stock TSI & stage 2 FSI
      01-04-2008 06:02 PM #4
      alot of environmental activists that are pissed at you...

    5. 01-04-2008 06:11 PM #5
      Putting in to much coolant, as in over filling it past the MAX marking on the Coolant overflow bottle. Would it cause the car to overheat thats my question, or do any other damages?

    6. Member
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      Feb 4th, 2007
      Pennsylvania, U.S.
      1991 Golf GL
      01-04-2008 06:15 PM #6
      Wouldn't overheat, but parts could be damaged. The air in the system is like a little cushion once the system is pressurized. You can compress air, but you can't really compress a liquid.

      Unless you filled it until it was coming out of the overflow tank I wouldn't worry about it. The cap is designed to vent excess pressure.

    7. Senior Member Mr. Knappy's Avatar
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      Oct 10th, 2006
      Levittown, PA
      1991 GTI 16v
      01-04-2008 06:42 PM #7
      It would jsut pour out the cap. Won't hurt anything.

    8. Member DubbinChris's Avatar
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      Dec 15th, 2005
      Columbus, OH
      85 Ur Quattro, 88 Fox Wagon (sold), 90 Golf, 83 Q Sedan TD, 88 QSW (soon tdi), 85 Q wgn, 03 A4 Avant
      01-04-2008 08:18 PM #8
      Quote, originally posted by upand_at_them »
      but parts could be damaged. .

      Not likely.

    9. Geriatric Member steveo27's Avatar
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      Aug 1st, 2005
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      2011 TRD Tacoma
      01-04-2008 08:30 PM #9
      it would spill out the over flow
      Crooked Euros : try harder

      Brand fan boys are idiots

      We Do It Big In PA

    10. 01-04-2008 09:28 PM #10
      It will make your car overheat. Ask me how I know.
      PPL Stop messaging me about the BBS Steering wheel. if you read the threads, it sold over 2 yrs ago.

      Looking for an aircooled beetle or bus, type 1 or 2, running engine, but cosmetic condition is unimportant. email if you have one for sale.

    11. Member Jason_Reuben's Avatar
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      Jan 15th, 2005
      Portland, OR
      One of everything :)
      01-04-2008 11:23 PM #11
      If your cap is working as it should, If the pressure gets high enough it will just push out some coolant through the cap as it needs.

      Now if your cap is bad, it can over pressurize the system and cause things like busted hoses and in the worst case, a busted heater core\ radiator.

      It will not and has no way to cause over heating. If you over heat because of to much ( volume, not mix ) coolant, its because something else if causing it, like air in the system because you have no where for the small bleed to push out the air.

      Now if you put to much coolant and not enough water (wrong mix) you can cause it to overheat, but again, it would mean that something else in the system is not working as it should. Coolant does not dissipate heat as well as water. In fact it makes a good insulator and will retain heat. That is why you mix it with water.

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