Depends how you define 'quality'. Cleanliness and water content perhaps, but in an old diesel like my Hilux or Landcruiser I'd rather fill it with super sour Iranian diesel that smells like rotten eggs (and costs a cent or two per litre) when you pump it than the ultra low sulphur stuff in Europe. Performance/economy-wise, I can't say I've ever noticed any difference in fuel quality across Europe or Asia in my Hilux, but as you say of your H engine, the 2L will run on literally any diesel-like hydrocarbon. I'm pretty sure I've run it on high ratios of kerosene to diesel in cheap Russian bootleg fuel stations.I'm running a 40 series which would run on butter tbf, but yea we also have top quality diesel. African diesel can be variable in places but you pay for it
Maybe off topic, but European petrol is even worse - When I lived in the Netherlands I noticed a sudden worsening in fuel economy in my Hilux Surf which I could not attribute to anything mechanical; only months later I realised it was the date they switched to E10 junk. Last time I was in Germany and Austria I could find 95 RON E5, but in other countries the Surf gets super unleaded now. The best petrol I have ever had was in Russia: 10 km per litre from 92 RON, which you can't buy any longer in most of Europe.
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