IN finland you can get Neste green diesel which cetan value is 54-56. (lupo will be tuned for that stuff... On regular diesel it is 50-51 range in Finland. That green diesel has more biodiesel (NExBTL) which cetan value is higher.
on 100% NExBTL diesels cetan value is between 70-90 but it has less energy density.
You will get the benefits og higher cetan if your car has learning ECU otherwise there will not come much gains.
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