What to do about my Mazda RX-8 NCT?

Hi,

I have a Mazda RX-8, which was due a test at the start of April. I am wondering what the rules are as regards emission testing. As you probably know, they have a different type of engine and require two-stroke oil, which would leave emissions very high. Do I need to stop adding two-stroke oil before the test or are they not tested for emissions?

Thanks

Patrick

Patrick Sweeney (LETTERKENNY)

Jun 2020 Filed under: NCT

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Expert answer

Hi Patrick,

It’s a bit of a catch-22, adding two-stroke oil to your RX-8 rotary. In theory, it can help with delaying the onset of rotor tip wear, but the problem is that it will destroy your catalytic convertor and that means you definitely won’t pass the NCT. I wouldn’t recommend it. Much better merely to make sure that the engine is properly and regularly serviced, rather than trying any short cuts like two-stroke oil. 

Neil Briscoe - Complete Car Advisor
@neilmbriscoe