Transport drives EU oil demand, so a Russian oil embargo would massively affect transport. But crude is fungible and the EU refines 500 million tonnes annually. The real problem is diesel dependency, which demands EU action beyond switching crude suppliers. A short 🧵. The EU consumes 3.6 times more diesel vs petrol. The glut of EU refined petrol means it's a net exporter, while diesel demand exceeds refined output. So we import an extra 10%, almost all of it from Russia. This is not easily replaced.