Do you listen to AM radio while the engine is running?
If so you would hear the god awful racket non suppresser plugs and wires can
induce. Suppresser plugs and wires are designed to eliminate the
interference.
It can also affect your other electronic gizmos.
No problem?
Listen to FM?
Ignore the sticker.

"John Addington" wrote in message
. cable.rogers.com...

I opened up the cover of my Mercury 9.9 today and saw that there were 2
spark plugs connected to the engine. On the sticker it said:

Standard spark plug: NGK BP8HS-15
Suppressor Spark plug: NGK BPZ8HS-15

I read the manual, it doesn't mention anything about the suppressor spark
plug. What is a suppressor spark plug, anyway?

To winterize my motor, do I have to fog oil into both plugs?

Thanks..