How do I check? 
Seat Leon TDI SE (2001/ Y)
I'm looking at using some Millers Diesel Power Sport 4 after reading posts in the forum. I have used some STP fuel cleaner and notice a smoother ride, but now wish to try the improved 'medicine' additive.
Do I have Euro IV compliant vehicles with catalytic converters and diesel particulate filters
or a Euro III vechicle?
Any thoughts how to check? what is this referring too? any information would be grand

Seat Leon TDI SE (2001/ Y)
I'm looking at using some Millers Diesel Power Sport 4 after reading posts in the forum. I have used some STP fuel cleaner and notice a smoother ride, but now wish to try the improved 'medicine' additive.
Do I have Euro IV compliant vehicles with catalytic converters and diesel particulate filters
or a Euro III vechicle?
Any thoughts how to check? what is this referring too? any information would be grand