SNIPPO>>>
>Recently I had a friend tell
>me that on an old engine, it's not a good idea to run them because they
>cause quicker wear to the older parts.  Is this true?

You get more power with Bosch Plus-4 plugs, same type I have been using for
about 15K, because those plugs allow a more complete burning of fuel.  The
only 'accelerated wear' I can think of would be caused by more powerful
explosions, hence more power, inside of your combustion chamber.  So, the
result maybe more hammering on the connecting rods, wrist pins, and bearings
below.  Is it enough to hurt your motor?  I really don't think so since the
power increase is negligible.

Now, if I could find a more powerful ignition coil...

Chris.
'85 Westy