add it to the oil.
Engine sealant????? Total waste of money and will do nothing but possibly harm your engine. Do not pour any engine sealant or additive in your expensive engine.
Shop for BlueDevil/16 oz. pour-n-go head gasket sealant 00209 with confidence at AutoZone.com.
You need the sealant on the ends where the supplied gaskets don't cover fully.
How do you seal a leaking oil sump in 2c toyota diesel engine
It is possible, however like you said it is temporary. It depends on how bad the leak is. I would suspect it would work, typically the whole will be small enough to work with that type of sealant.
If both surfaces are clean and flat and you are using a new gasket, no sealant is necessary.
Some head gaskets come with a coat of "Copper coat" sealant already on it. You can use copper coat on a head gasket safely. I prefer "Indian Head Shellac" myself. Just be sure to completely clean the heads first, and apply the sealant liberally. If you use too much, you can damage your engine by the sealant leaking into the engine itself.
Yes, just be sure it will withstand high temps.
In your dreams bubela! Buy a new gasket.
toyotanation.com is a good place to ask!
No sealant is used in that application.