[russell_h]

I read somewhere that some Soviet jets used huge quantities of alcohol for cooling.

[genocidicbunny]

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.

[echoangle]

Specifically the Tu-22 is known for this.

[p_l]

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

[kevin_thibedeau]

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

[natmaka]

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