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.

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: Stalls while driving

The only way I can think of that the air compressor would be able to shut the engine down is if the pulley on the compressor locked up causing the belt to break. The belt breaking is what would cause...

Q: When accelerating, car backfires or turns off

Hello. There is a possible recall for the ignition control module on your vehicle. You will need to contact a GM dealer and see if your vehicle is on the recall for the recall 03v231000 ignition control module failure. The...

Q: 1999 Volkswagen Beetle overheating. The radaitor top hose was broke. Got a new radiator. How can I check the water pump and the thermostat

Hello. If you wanted to diagnose these other parts, then you would need to use an infrared thermometer to see if the coolant hoses are getting hot and that the radiator is getting hot indicating that the coolant is flowing....

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...