when replacing a frost plug u can use a sealant but only use silicone u dont realy need it and yes u have to clean the area good
You need the sealant on the ends where the supplied gaskets don't cover fully.
new o-rings coated with A/C PAG oil
Thermostats in most vehicles have seals and gaskets that are designed so you do not need any aditional sealant.
You do not need to add a sealant to the gasket. Just make sure you torque the bolts to factory specs.
If you are talking about just the bulb you need to twist the socket counterclockwise from the back of the housing and then pull the bulb out of the socket. If you're talking about the whole housing then you need to be careful when you're replacing it be careful not to break the mounting clips on the bottom.
no u dont need to use sealant u should get a gasket
The Chevrolet water pump bolts do need a sealant. Thread tape can be used on the bolts in the place of a sealant.
no gasket sealant needed. Just original gasket is fine.
If they leak, they need replacing. No, if they leak they don't need replacing. If they have been scored or eaten they need replacing. If they only leak they need to be re-packed.
I had the same problem! It was coming from the thermostat housing. The pipe that goes from the overfill tank (antifreeze) back behind the engine to the thermostat housing is the one you need to fix. I had to go down to GM and order a new O ring. They cost like 5$. Unbolt that pipe. And you will see if you need a new O ring. Either it wont be there at all, or it will be to big, or split. Mine was dry rotted. There is a sealant you can buy and put it around the O ring b4 putting the pipe back in. But the car has to sit for 24 hours for the sealant to harden. I can't remember the name of the sealant, but your local auto part store may be able to help you. The sealant has to withstand the heat, IT is in a very hot spot!
Yes, toilet tank bolts can leak. To fix them, you can try tightening the bolts, replacing the washers, or using a sealant. If the leak persists, you may need to replace the bolts or call a plumber for assistance.