Picture of my spark plugs - 99 boxster, 59k miles

[WhipE350]

Originally Posted by JoeFromPA

If the threads should be dry, then that's something for consideration.

I stand corrected Joe, I took mine out and looked, the threads looked dry and oil free, then I took a picture with a flash and as you can see it creates a nice oily shine .

Our tips look similar though, mine just have less miles on them.

[Idaho Red Rocket 3]

I am ready to change the plugs on both cars. Base and S. Is there any advantage/disadvantage between the Bosch Platinum 2 tip and 4 tip plugs ?

[JoeFromPA]

Any of the pelican-parts recommended spark plugs are good, which include bosch 4-tip and NGK 2-tip and Beru Ultra 2-tip (like what were in mine).

I was impressed by the NGK quality of construction. Instead of the threads going into a flat sealed area with an aluminum crush ring, they went into a tapered cone with a very nice tapered & thick crush washer.

Whether or not this makes a damn bit of difference in regular use, probably not, but I'm guessing the strength of the seal is enhanced because of it.