Received a private message regarding a sparkplug recommendation but the sender wasn’t logged in so I don’t have any idea who it was.

Here’s my response.

Autolite 45’s or Autolite 46’s are typically available.  If it’s 8½:1 CR or less, go with the 46’s.  Otherwise use the 45’s.  After you run the engine for awhile, you can read the plugs and see if you need to make an adjustment.

Lorena, Texas (South of Waco)