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Follow on from my earlier post above;
Had the wifes car in for MOT this week, passed with flying colours. Strange thing is the emissions (its a petrol) are all down to zero. Previous years they have been very low, but now all zero - despite the engine, spark plugs, exhaust system being a year older. The only change this year is the PD Plus oil. I can only guess that this has helped the emissions (or the testing machine is duff??)
Had the wifes car in for MOT this week, passed with flying colours. Strange thing is the emissions (its a petrol) are all down to zero. Previous years they have been very low, but now all zero - despite the engine, spark plugs, exhaust system being a year older. The only change this year is the PD Plus oil. I can only guess that this has helped the emissions (or the testing machine is duff??)