It depends. If the manual says it will work, then yes. Otherwise, API Service SM has friction modifiers that are not compatible with motorcycle's wet clutches.
unbolt it
NO
should be 2002 - 2004
NGK 5531 gap .036
it needs 10w-40
About 110 miles per hour, from my experience.
3.7 Gal tank 0.9 gal reserve
The starter motor is on the front side of the engine underneath/behind the intake manifold.
The 2004 Honda Civic has 115 horsepower at 6100 rpm. The engine boasts 4 inline cylinders with a single overhead cam.
under the motor by right front tire
The Dynojet website give a typical 2004 Honda Aero a rating of 36.7 hp. Hope this helps. NigelNicholson@comcast.net
Under the left engine case. Buy a Honda service manual, that will help.