My sensor casting seems to be holding out. Just a tinge of golden colour after a few hundred kms.
Besides the hardest part is getting rid of the rough casting.
A quick buff will get the elbow nice and silvery again.
As I've said before there is a clear exhaust spray called VHT.
Might seal off the stainless and prevent it oxidising.
Not available here so I can't try it out.
[ This message was edited by: Avi8or on 2006-06-14 03:39 ]