Pic related is M60 upgraded by Leonardo package.
Russia is now bringing to the front hundreds of T55 tanks, many of which are inferior to the normal M60/M68 tanks.
While they are very outdated we have seen that the threat environment on the frontlines in Ukraine offers little discrimination between the most modern T90M and the oldest T55, both of them are knocked out by javelins, mines, drone rpg (when hitting spots not covered in ERA), heavy artillery, ATGMs and so on.
The main advantage of more modern tanks are modern sights but nowadays it would be relatively easy to add a coaxial digital cameras/thermal setup run a wire to the inside of the tank and set up a tablet to use as a modern alternative to the old analog sights.
Also tanks are more and more used either as area weapons like indirect fire artillery or at extremely close range to clear trenches.
Tank duels are so rare that they are nearly negligible.
So adding ERA panels, some modern digital coaxial sights would make the M60 if they haven't been upgraded yet.
There are around 14.000 M60 still around the world.
Turkey alone has nearly 900 upgraded and operational.
Wouldn't it make sense to trade a couple of dozens aging F-16s to turkey for a few hundred upgraded M60s for the Ukrainians?
1000 tanks, as old as they might be, are still a force to be reckoned with.
And getting 1000 M60s should be relatively easy as many Nato members still have them mothballed in some warehouse or even still in service.
Ultimately even just using them as minefield plows instead of wasting Leopards or Abrams in their mine clearance configuration would be worth it.
And regardless how bad the CEP is when using them in indirect fire you can easily understand how a few dozens of them can easily suppress an area while being hard to hit back as they can shoot and scoot.