The cardiff run is the third I,ve done in the last three weeks and I noticed the mpg drop from the usual 51-53 down to 48mpg. Performance still feels very strong but as I say the amount coming out is way beyond normal. The car has only done 52000 miles with full service history. Before the last oil change it barely gave out any smoke under acceleration.
I put in some diesel treatment in Hereford but that made no difference and I did give it some stick to the rev limiter.
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