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Replacing Thermostats, Sealant, Lube Or Nothing?

jrsavoie

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jrsavoie Enthusiast

jrsavoie

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Posted

Replacing thermostats, Sealant, lube or nothing?

 

I am in the process of replacing the thermostats in the 1998 Suburban.

 

I can't get the parts as clean as I would like without investing a lot more time or taking it apart further.

 

There was some oxidation present.

 

What should I use to insure I do not have a leak when I'm done?

 

I have synthetic grease, food grade food service grease, black silicone, Permatex gasket maker or nothing at all.

 

How clean does it have to be to not worry about leaks?

 

It did not appear to be leaking before.

saxdogg Enthusiast

saxdogg

Posted
Posted

I've had good luck by putting a thin layer of RTV on the gasket with my fingers, just a light coat. Never had a problem. Use plastic scrapers or some goo-gone type remover to get the material...might have to let it soak a bit.

jrsavoie Enthusiast

jrsavoie

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Posted

Thanks

 

I ended up using the Kitchen grease. It said to be used with O-rings and seals. I got the aluminum a little cleaner and coated everything with the grease. Hopefully no more oxidation will occur.

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