best spark plugs

[loftylowe]

i dont know when the spark plugs in my 172 ph2 were changed so i would like to get them done but i dont know what the best plugs are to use. can any body help?

 

[Fred@BTM]

NGK PFR6E-10 super plats

 

[Dave.]

do not use bosch super 4 or anything other than the above, mine ran like a bag of nails on bosch plugs