I'm fully aware that octane isn't energy density - octane is a long chain which prevents pre-ignition - hence pinkpinkpink - pre-ignition - pinking. I had to fill up a mercedes 190E 2.6 on 60 on one occasion, and fuck did it hate it - particularly as I'd lost my exhaust somewhere in the desert. Set off car alarms when I got into town, just by driving by.
My point was rather that they require fuels with such incredibly low octane ratings due to the astonishingly crap compression ratios on ladas, volgas, and yaz trucks, and most soviet technology. The point was that they could run on near-as-damnit bunker oil, watered down with expensive petrol.
Because these vehicles are still in use, they produce an extraordinary amount of pollution, as the low temperature burning that occurs in them results in a crap-tonne of soot.
Same kinda deal with diesels, but again, their diesels will literally run on bunker oil, and you wouldn't believe the incredible clouds of crap that spew forth from them - particularly when they have no exhaust system.
My point was rather that they require fuels with such incredibly low octane ratings due to the astonishingly crap compression ratios on ladas, volgas, and yaz trucks, and most soviet technology. The point was that they could run on near-as-damnit bunker oil, watered down with expensive petrol.
Because these vehicles are still in use, they produce an extraordinary amount of pollution, as the low temperature burning that occurs in them results in a crap-tonne of soot.
Same kinda deal with diesels, but again, their diesels will literally run on bunker oil, and you wouldn't believe the incredible clouds of crap that spew forth from them - particularly when they have no exhaust system.