Oh, well then, I must be mistaken when I see  those pipes on my van.

 Perhaps I meant..."inhibit rust to a very great degree on the outside"
where the Peanut Oil was wiped on..What ever....

  The rusty surface coming up on my expensive custom-bent pipes had me
concerned...until I wiped that oil on there and the rusting  stopped
now...on the outside.  Except, as I said, on one small section where the
rust got a really good start, and there it seems to come back, but less
'aggressively' than before the oil coating.

On Sat, Jun 25, 2011 at 2:42 PM, Robert Stevens <mtbiker62@gmail.com> wrote:

> On Jun 25, 2011, at 3:23 PM, Don Hanson wrote:
>
> > A while back someone asked about powder coating exhaust systems and
> > someone else suggested simply wiping the  exhaust system with Peanut oil
> to
> > prevent rust.
>
>
> That just cannot happen. PREVENT, that is.
> Except for the fact that exhaust pipes ALWAYS rust from the inside out,
> it's just
> that the outside is easy to see. That's one reason (aside for performance
> and
> function) why ceramic coating is done both inside and out, and now
> different
> coatings are used inside.
> bob