my 36 is due for a new line this summer just be cause of age.Copper tubing is not that expensive, easier to handle.The outside of the line looks fine, I wonder about the inside.Have noticed that plastic tape wrapped on brake lines keeps them looking like new. a bit of grease on bleeder screws and wheel cylinder connections keep the salt off these points.Its easy to wrap new brake and gas lines with plastic tape be fore installing.Have had much repeat failure of new lines until I started tapeing them.A friends truck just blew a brake line at 40,000 miles. Better check yours.