Thanks; I was curious as a couple of years ago my Astra 1.3 cdti started misfiring, and the engine management light came on - it occurred quite suddenly during a journey.
The pedal test (this sort of thing -
www.vauxhallownersnetwork.co.uk/index.php?threads/vauxhall-fault-codes-pedal-trick-test.202018/ indicated problems with the coils and the EGR valve. My local indy confirmed the test-verdict, sorted it all out, and the car has run well ever since.
Since that incident, however, I have used BP Ultimate almost exclusively.
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