On a 1998 Ford F-150 :
Check the Vehicle Emission Control Information ( VECI ) decal located at the
front of your engine compartment ( it will show what type of spark plug to
use , and the spark plug gap )
According to the 1998 Ford F-150 owners manual : ( 5W-30 )
97 oct
any kind
F150
C6
Ford f150
Ford F150
what kind of car?
Check Alldata.com Check Kbb.com
Manual choke
You use mercon 5
Our concrete saw uses that kind of spark plug