First plug swap in 06 WRX

[1 Lucky Texan]

figured it's time, 75K miles on originals - 13 years old.

so, I got 4 6481 NGK ILFR6B plugs I want to put in, just wondering if there's anything to watch out for and how many of you would use oil or never-seize on the threads. I think NGK recommends dry install.

should be similar to our 03 H6es COPs right?

I also have an atmospheric temp sensor but dunno where it's mounted, my original has been reading 7 degrees low for years.

Edited October 13, 2019 by 1 Lucky Texan

[Rooster2]

I always use anti-seize when installing new plugs, and even on road wheel studs, when installing rims. Just don't allow anti-seize to get on the tip of the spark plug, but I am sure you already know that. Can't understand why NGK would recommend a dry install.

[FerGloyale]

I dry install but I'm in western Oregon were we don't have corrosion concerns.

[Rampage]

I use anti-seize, but it is military grade with copper in it. It's a leftover from the cast iron head days.

[nvu]

NGK plugs already have nickel alloy coating on them.  On aluminum you can install them dry.  I do.

There's very little room to access the rear plugs, I usually use a plug socket -> short extension -> tiny wobbler coupling -> wobbler extension -> wrench.

Outside temp sensor would be on bumper, lower opening near license plate.

[heartless]

have NEVER used anti-seize on spark plugs - there is no need to. you are not supposed to torque them in that damn tight.

 

[1 Lucky Texan]

so, that seems to be 2 plugs with and 2 without - lol!

[1 Lucky Texan]

anyone change from underneath? worked well on our Outback.