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Like the title says, I have an old polo 3 - maybe 20 some years old. It runs on unleaded fuel.The problem is that I keep having to refill it with cooling liquid once every two days, sometimes even every day. Many mecanics looked at the problem, but no one could pinpoint the leak. Does any have a clue about the cause ? or has anyone encountered such a case ?

  • So no drips under the car, no wet carpets, no steamed up windows? – HandyHowie Feb 28 at 9:47
  • There are drips. Not the rest. But I was wondering how to pinpoint the leak (like a nicked tube ) – DTl Feb 28 at 10:20
  • Can you give us more clues, like a photo of the engine bay and and arrow indicating the rough location of the drips? – HandyHowie Feb 28 at 10:45
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"Many mechanics"?? Really? Clearly the coolant is going somewhere and if it's not running out onto the ground, and a few drips are not going to empty gallons of fluid in a day or two.

I'm going to suggest that your coolant is going into the engine and either collecting there or being burned and going out the tailpipe. If it's collecting you will find it in the oil and unfortunately that means at the BOTTOM of the oil pan where it will be used instead of oil to "lubricate" your engine. It's easy to check for this, pull your dipstick and if the level is way high and it's covered with brownish foam you might as well plan on getting the engine replaced.

More likely is that your head gasket is failed and the coolant is being sucked into the cylinder during the intake stroke and then being burned along with the gasoline. In this case you will only have telltale signs like a coolant smell in the exhaust, a lot of moisture in the exhaust (can sometimes be seen) and possibly poor performance.

Any competent mechanic should be able to figure this out and a compression test is helpful to diagnose as well as an exhaust gas analyzer.

Bottom line is that I think you need to find better mechanics.

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  • I sure do need to find a solid mechanic.Thank you! – DTl Feb 29 at 12:20

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