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Coolant leak, must be thermostat housing?

free_guac

New member
Location
San Francisco Bay Area
Car(s)
2016 GTI
Hi folks, my car is at close to 60K and the coolant is leaking bad. Is it 100% a thermostat housing issue? How can I identify it?

I had a replacement like 20K miles before for free at the dealership when they were working on something else.

Thanks!
 

jimlloyd40

Autocross Champion
Location
Phoenix
Car(s)
2018 SE DSG
Look for staining on the thermostat housing. But the thermostat housing is almost always a slow leak so if yours is leaking bad it sounds like the leak is elsewhere.
 

odessa.filez

Autocross Newbie
Location
Roswell, GA
Car(s)
2016 GSW 1.8tsi auto
I have a.slow leak in my radiator, visible below the airbox. I lose just enough to trigger the light every 5k miles or so.

Inspect has much as you can.
 

odessa.filez

Autocross Newbie
Location
Roswell, GA
Car(s)
2016 GSW 1.8tsi auto
I'm sure they do. If even say,.10% took a dump before 100k, VWs would be banned from cities due to creating major traffic backups at rush hour.

When I owned a BMW 3, people on forums claimed things like 'they all fail before a 100k' and forum people would proactively replace out of fear. At 165k trade in, mine was fine. Most were.

Squeaky wheels on forums..Echo chambers.
 
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