Quote Originally Posted by BigTruckDriver View Post
I believe there is a list of heat ranges ,your auto parts store has it, it might be a good idea to go down a step with cheaper plugs if it doesnt cure the go to the next step down.
Autozone can't do this, Pepboys can't do this, Kragen can't do this - all they can do is look up by vehicle, if I ask for the next colder plug they don't even know what I am talking about, kids these days...

The next step down I have been able to identify are $2 plugs, heat range of 10 vs. 12 and have gasketed seat vs. tapered seat, otherwise thread pitch and length are the same.

What thinks ye?