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spark plugs question

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Hi guys im wondering in how many kilometers should we change our spark plus? every 10tkms? coz we dont have a dealer here so we have to maintain the car ourselves thnx :D

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I wonder if the "every four years" is something that is important to follow. It has been four years and 10,000 miles since the last spark plug change. Should I go ahead and change them?

Also, in 2005, the first and prior owner had the spark plugs changed by the dealer. It was either the first or second spark plug change for this 1999 Carrera 4. Would the tubes have been changed out given there was a Service Bulletin on the tubes for 1999 cars? (I'm wondering if I should change the tubes in the coil packs if I'm doing the spark plugs).



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I change my MY99 after 5 years - they looked and ran okay but there was some corrosion on the electrical contacts.

If the car is late MY99 then the oil tubes are likely the newer design. Either way if they are not leaking then I would leave them alone.

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and, again... what are the best spark plugs to use on a 996 C4 '99?

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Simple, the OEM one's. No problems with, decent product and acceptable priced.

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They gave me this:

999 170 207 91



for 20$ each

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