Skip the auto shop - Our mechanics make house calls

Q: change a thermosrat on a 2004 VB beetle 1.8

asked by on

I have taken the thermostat out twice and booth times it leaks. I have only seen on the videos of only one mechanic use silicone, do i need to do this or is this some one that is missing with us that are trying to save a few bucks. Only one mechanic has shown this steep, if i need silicone what do i use for this application or what to ask for, thanks.

My car has 72000 miles.
My car has a manual transmission.

A: Make sure that all of the old gasket materi...

Make sure that all of the old gasket material is removed and that the surface is clean and dry before installation. Sometimes, gaskets will leak due to an unclean surface or uneven surface. By using RTV (silicone), it fills in the voids and helps with sealing. I use both black and orange RTV for high heat applications.

Don’t use too much, just a light smeal across both surfaces is enough. You don’t want the sealant to squeeze out and cause a blockage somewhere in the system. Your local parts store will have the RTV sealant you need. If you need help with this repair, a certified technician, like one from YourMechanic, will be able to complete the repair or replace your thermostat for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Not able to reverse.

Hi there, There are a few ways this can happen and one instance may be the connection between the shifter handle and transmission being loose or damaged. Consider having the vehicle checked over by a professional from YourMechanic to determine...

Q: Cooling system

The thermostat is a commonly known part to fail causing the coolant to not flow through the radiator properly causing the engine to overheat. The diagnosis sounds about right and is consistent with a thermostat failing. This can be caused...

Q: My Volkswagen sounds like it's got a dry wheel bearing in the front.

Judging by age and mileage, if you haven't had a wheel bearing failure yet, you're about due. Wheel bearing noise differs from transmission noise in that it sounds the same no matter what gear you are in. It will change...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.