M272 has one plug per cylinder, so you only need 6, unlike the M113, which does have 2 per cylinder for a total of 16.I have changed plugs on many cars before but when i opened the hood on my slk 350 i was just lost.. haha and that they are 12 spark plugs it just confuse me but i will give it a try!
Thank alot for the tips!
Mercedes service told you this? I think I'd try to locate a new service or make them a wager; If they can't find the other 6 plugs, the next service is free!!!Thanx everybody!
I just got confused when they told me in Mercedes service that the car has 12 spark plugs i culdent understand where the rest 6 was.. Haha