Coated headers and Engine Break in.
Rudy posted a link to some headers in another thread.
The link talks about not using the coated headers for break in because it will damage the coating.I have heard this for years but never knew why. Why would the coating be damaged buring break in but not after break in? I don't get it..Is it just a preventative thing in case your tune up is a mile off the first time you start it?Such as retarded timing etc ? Can someone please explain to me what exactly happens?