[wiswind]

I would leave it be as long as it is working.
While tracking down a slight miss......I replaced my original one with a metal Standard Motor Products unit...... Original was still good.....and the replacement is still good.
Slight miss was caused by dirty fuel injectors that many fuel system cleaners would not clean (I have since found that Berryman's B-12 Chemtool seems to work on these particular deposits the form on the inside of the end cap).