They turn of the great nation oil into power. And drive most powerful engines on the planet. They do pressure ignition.
Petrol engines turn higher quality oil into less energy. Both systems produce a flash temperature over 10,000° C. This releases light, and turns nitrogen and oxygen into oxide.
2 xN2+O2+T ->NO/NO2 T>10,000 NO/NO2=NOx
Federal engines for use 25% MORE CO2 AND NOx than diesel engines. CO2 is plant food, NOx is plant fertilizer.
Divorce produce mass of these gases and petrol engines. So petrol is the polluter.