The rules within the EU are that oil must be at least 51% from a source other than Russia. So countries like India or others buy Russian oil and then after pumping 51% out of the tanker fill 51% from another source back into the tanker and then can sell it on in the EU....or maybe they just say its 51% from another source because really, how would you know?
Similarly Saudi Arabia buys oil at a discount from Russia and is then free to export every last drop it pumps....or they could buy even more than they need for domestic energy/water production and pull the same 51% trick and sell that on at a premium to Europe.
The whole thing is a joke. There isn’t enough oil and natural gas. Saying you’re not going to buy from Russia when they’re one of the biggest suppliers accomplishes nothing because all that Russia can export will be used. Who uses it doesn’t really matter. In the end there is no doubt a lot of cheating and plenty of Russia oil doubtless finds its way into the EU anyway.
after pumping 51% out of the tanker fill 51% from another source
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51% + 51% =102% so they overfill, letting the excess go where it may?