Just curious on when to change spark plugs.

I have about 100,000 km (65,000mi) on NGK Vgroove Platinums...

Anyone think I should change them? Any benifits to this?

If ur cars not running right you should change them. Just take them out and take a look at them. 65K is maybe around the time to change but usually a nice cleaning and re-gap will do u just fine.

Yeah things have been running slugglishly of late.. i've been sloppy on the maintenance.. just cleaned out my cone filter (was increbile thick and black when rinsed out) .. cleaned out my intake manifold.. fuel lines/injectors .. oil .. and then plugs are next:)

Thanks!

what do u guys use to clean all of that.. i should mayb do that lol

For the intake manifold? Just a regular areosol exhaust cleaner works fine. Spray it in while the engine is running and you'll see all thsi black smoke come out the back. Gross but it works!

K&N Filter Cleaner -- is good for the intake. Spray it with the cleaner. Rinse. Repeat, and seal with the oil Makes a difference >>

Injectors .. just use a fuel additive - STP, CD2 whatever.

Oil .. CD2 One Step Powerback .. works great!

Plugs .. I just changed .. car runs smooth again >>

I don't get that first step....and also how do you change spark plugs?? I am clueless about this..can somebody help a newb out?