Hey fellas!
I got my 6097's (12) and installed them. About 2 bucks each from where I ordered them.
NOW.. my mechanic (which you could all flame, but he does work on turbo Toyotas mainly, and he does have 10 secs cars....) says that grade 7 is too hot!!! I was like: "wtf? Everyone in supramania told me to get these!"... he says he usually puts grade 8 spark plugs on this engine. Maybe he's just mistaken? Or maybe he uses that because he uses too much boost? (I'm running stock boost).
What can you guys tell me? What is stock grde?