Hi been a few months since I've been on here but spring has sprung in Michigan and took the convertible out .Question do I replace iridium spark plugs with same or is it alright to go platinum

 

Spark plugs have changed over the years since the 90's and it's a personal choice but I like NGK plug.I ran non plats for years but I changed them out every 5000 mi or so.Now I run the NGK plats.It's just me and I'm happy with them.Iv'e ran the ac delco's(twice) and autolites,but always go back to NGK.My02.Hope this helps.

 

I would recommend the NGK TR55IX Iridium plugs..... extremely long life, worth the extra $$$$.

 

than guys injuneer that's the ngk I was thinking about

 

by the way what heat range are ngk u mentioned injuneer

 

Stock.