So I've had my 07 2.4 auto for about four weeks now and everything seems essentially sound. There's 109,000mls on it and the service book has been stamped at regular intervals but I've no record of what was actually done so as I've an errand today at one of the local motor factors anyway I'm going to pick up an oil filter, air filter, and set of spark plugs. My notion of the spark plugs is that they'll either be the originals, or relatively recent, and I'm hoping that I should have a reasonable idea which. Has anyone been aware of a set in place for a ridiculously long time, and how they looked? Thanks.