I was having a discussion about passing this year's emission testing and the topic of catalyts being damaged by oil burners came up. It was mentioned that as long as a car is Euro 3, oil burning shouldn't matter in passing the test and that using ACEA A/B oils would be fine. Personally, I don't think it matters if a car is Euro 1 or Euro 6, if it's burning oil, that catalyst will have reduced efficiency and lifespan and will make it harder to pass the test. And in any case, using an ACEA C oil would help in a mild case of an oil burner.
As an aside, is there a threshold for oil burnt per given distance that would start damaging the catalyst?
As an aside, is there a threshold for oil burnt per given distance that would start damaging the catalyst?