GIVE IT A MISS

Herald Sun - Motoring - - Ask Smithy -

QAT

38,000km my 2004 Toy­ota Corolla de­vel­oped what felt like was a mi­nor miss in the en­gine. The man­ual in­di­cated the spark plugs should be changed at 40,000km. I changed all the plugs and this al­le­vi­ated the miss. Can I use longlife spark plugs? If so will this dam­age the en­gine in any way or im­prove my fuel econ­omy. Tim Barry

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