Best high temp exhaust sealer?

[J Banning]

What is the best high temp exhaust sealer? I'm tracking down an exhaust leak (headers, turbo, crossover, etc.) and before putting it all back together I will clean all surfaces and then apply a thin coat of sealer to ensure a good seal.

I've seen the Permatex Copper sealer, but was wondering if there was anything else out there. Preferably something that I can find readily at a store.

I plan to let the car sit overnight before starting it, but aside from that are there any recommendations?

Thanks,
-Banning.

 

[Mr URL]

I've had good luck with the Permatex Ultracopper sealer. Haven't tried anything else and it's easily available.

 

[TURBOV6]

Permatex Ultracopper sealer, I used on my driver's side exaust manifold and crossover and no leaks yet.

 

[John Larkin]

Nickle-based antiseize. Worked good on the turbine/header/elbow connections for me.

 

[J Banning]

Thanks Guys.

-Banning.

 

[Joe 1320]

Discount Auto Parts has a stainless steel liquid exhaust sealer. Works good for cracks in manifolds..... I use it as as a joint sealer. It has never blown out on any joint that I've used it on.