I just changed my spark plugs this weekend. Would seafoam be a bad idea. Will it ruin my spark plugs. I really dont feel like changing them again.

 

Does anyone have any insight on if using this stuff it will ruin spark spark plugs and O2 sensor. I have read that it could but I need someone's (with real experience) thoughts on this. I need to change my O2 sensor because I have no idea how long its been in there but I would really rather not change spark plugs again.

 

did mine last week with a new cat fresh tune up and every thing is fine. i didn't get a big smoke show but i run a tank of high octane ever 4-5 tanks with lucas fuel system cleaner and i dont run cheap gas

 

i run cheap gas and didnt really get any smoke show =[ 168XXX on the clock... although when I opened up the valve cover to replace the gasket everything looked brand new..... i guess there could be no build up??