Heavy Rust On Exhaust Manifold....
So I was under the truck today marking out my spot to put the EGT thermocoupler and I noticed I have a severe amount of rust on my exhaust manifold. It may just be surface rust, but it is to the point where it flakes off if i run my fingers over it.
Is this normal for these to rust in this area?
Should I be concerned about manifold rusting through or is it probably just surface rust? I see know holes in manifold anywhere.
Lastly, is it worth trying to clean up at all with wire brush etc?
Thanks as always for the help!!