Water circulation, water keeps disappearing from recovery tanks?

Tiny
CARYAH GIJA
  • MEMBER
  • 2008 MAZDA 3
  • 1.6L
  • 4 CYL
  • AUTOMATIC
  • 12,163 MILES
The car has no leaks, water not mixing with oil, but I will keep on adding water in few kilometers of driving.
Sunday, June 9th, 2024 AT 11:27 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,451 POSTS
There are only a few places that coolant can go in an engine. You don't see an external leak or coolant in the oil, which suggests that it is likely a bad head gasket and the coolant is being used that way. This shows a few tests that can be done to determine if that is the case:

https://www.2carpros.com/articles/head-gasket-blown-test

The pressure test and chemical test can usually be found as loaner tools at a parts store. I would suggest doing them and then you can decide what to do from there.
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Monday, June 10th, 2024 AT 5:20 AM

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