After some thought I will now discuss a little bit about what is really and truly good about the fact that Euro 5 diesel and Euro 4 petrol for RON97 is now on sale in Malaysia. By the way, the cleanest RON95 could very well be from BHPetrol or BHP, which is at the very least Euro 3. So what does this mean for us motor vehicle users actually?
Sulphur is naturally present in crude oil and usually oil companies process the sulphur out of the oil during refinery process. The extent to which sulphur is removed during the refining process will is partly what makes it Euro 1,2,3,4,5,6 or whatever number compliant. Euro4 now means 50 parts per million (ppm) of sulphur instead 500ppm for Euro 2.
