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Still do, though these days they're a little more efficient, so it's only the flight crew that needs to be cooled with that alcohol.

Specifically the Tu-22 is known for this.

Many of the Russian fighters still in active service have alcohol coolant. The ground crews are reputed to partake when they want a tipple.

MiG-21 radars used high quality pure ethanol in evaporating cooling system

Some did, however there were no Soviet jets at the time of this story.