I highly suggest the US provides the tanks for these reasons:
They can guzzle all of the fuel reserves. Ukraine should already knows why with the GTD-1000TF on the T-80, it can burn anything, but at the cost of high fuel consumption. Going from a diesel to a turbine cuts the effective range in half. All that dynamo power results in a much volume of air intake intake, making the tank engine more vulnerable to poor maintenance. Which in turn, increases dependency and stress on logistics.
As a bonus, any tank leaving US inventory is a tank that will stay out of US inventory forever, making our F-15s and nukes that more effective. The parts will have to go with the tanks as well. Also the recovery vehicles. And the fuel trucks.
I will also say, that throwing tanks against the Soviet "Counter-Deep" doctrine is a bad idea. Israeli tanks were worthless against it when Egypt employed it, and unlike Egypt, Russian also has air superiority.
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