Spark Plugs

[B juice]

Are the standard plugs Iridium? If not, aren't there plugs that will get better mpg than the OEM?

[Willie Williford]

Yes the std. plugs are Iridum. The will last longer than a convential plug. (100,000+ miles).
A lot of the new plugs are also useing Iridum now.
Better mpg? No tests avaliable yet.

Willie

[Ehetleos]

Originally Posted by B juice

Are the standard plugs Iridium? If not, aren't there plugs that will get better mpg than the OEM?

Yes, iridium plugs come as standard. They come at 3-5 times the cost of normal plugs but last for almost a lifetime, as mentioned by Willie Williford above.
Τhe hype behind the iridium-type spark plugs is that, since they are "cold-type" plugs, they will deliver better ignition of the mixture and thus better engine output resulting in better/more economical handling of fuel. That in theory, at least.
Many of my motorbike mates tried iridium plugs in a variety of bikes (1, 2, 3 and 4 cylinders) with no apparent result in overall mileage. Better throttle response in high revs-yes, better fuel consumption-no. And they seem to work better for high rev engines (12-16 valves).

[B juice]

Thank you . . . I'm just trying to do a few things to ensure better use and fuel economy for my INSECT . . . oops! I mean INSIGHT.