My thermostat had no gasket?

[silviaz]

I just noticed something odd. I went to flush the coolant out of my car and noticed after removing the thermostat to see if additional coolant would come out that there was no gasket, only some gooey rtv sorta stuff but it was rather thin. No rubber surrounding the lip of the thermostat. Is this normal? It's starting to leak also after putting it back lol. Not sure if I should get a rubber gasket considering most cars have this (it's for a subaru as well), or just get some permatex rtv stuff?

My car previously didn't leak at the thermostat.

[Milkmun]

Clean both surfaces and apply fresh rtv.

[silviaz]

32 minutes ago, Milkmun said:

Clean both surfaces and apply fresh rtv.

Will do, cheers.

[silviaz]

40 minutes ago, Milkmun said:

Clean both surfaces and apply fresh rtv.

Nvm ignore this I read it wrong

Edited December 26, 2024 by silviaz

[silviaz]

13 hours ago, Milkmun said:

Clean both surfaces and apply fresh rtv.

I'm an idiot, turns out there was a gasket it was just stuck on the block lol. 

[Duncan]

On 27/12/2024 at 11:53 AM, silviaz said:

I'm an idiot, turns out there was a gasket it was just stuck on the block lol. 

But, probably that happened to the last person too, which is why the RTV was there.....if you aren't putting a new gasket in you will need to seal the old gasket back to the metal surface with something, the gaskets will generally only work properly for a single use as they set/harden in that shape

[silviaz]

On 1/7/2025 at 4:52 AM, Duncan said:

But, probably that happened to the last person too, which is why the RTV was there.....if you aren't putting a new gasket in you will need to seal the old gasket back to the metal surface with something, the gaskets will generally only work properly for a single use as they set/harden in that shape

Yep I ended up buying a new gasket and no leaks since.

[joshuaho96]

On 1/11/2025 at 5:17 AM, silviaz said:

Yep I ended up buying a new gasket and no leaks since.

Pretty sure the factory assembly doesn't have any gasket at all, just RTV.

[silviaz]

1 hour ago, joshuaho96 said:

Pretty sure the factory assembly doesn't have any gasket at all, just RTV.

That would be interested if it's the case as seems like it would make the job a lot messier but subaru sells OEM gaskets so seems it might of had it.

[joshuaho96]

1 hour ago, silviaz said:

That would be interested if it's the case as seems like it would make the job a lot messier but subaru sells OEM gaskets so seems it might of had it.

Ah yeah I forget we aren't talking about an RB.

[Milkmun]

On 13/01/2025 at 5:27 PM, joshuaho96 said:

Ah yeah I forget we aren't talking about an RB.

Shit same here hence my first reply. Immediately thought RB