What kind of plugs should i use as just trash plugs for the job, are just the $1-$2 plugs good enough?

 

Id run your old plugs, the ones you have in now and get yourself some new iridium ngk's to run daily for when your done with the seafoam. If you have some nice ones that are fairly new now then id go for some cheap copper plugs but get some ngk. I have tried literally 5 different manufacturers and the ngks are the only plugs that wont make my motor stumble, bog or act odd at random rpms.

 

You're supposed to change plugs when you seafoam? I didn't know that...my friends and I have seafoamed all of our cars and never had problems with spark plugs...*shrug* NGK ftw though...I went with OEM plugs, but that's just me...I'll be getting BKR7Es for my 1J.