Just hammer the stuff

Have a vintage tractor from 1956, where the rear tube in the tire loses air,
only little, then more and more, so that he was completely empty within 24 hours.
Since the tire is already almost 60 years old and I do not necessarily want him pull off the rim to collect a new hose, because I was afraid that this breaks down the tire and then I would have to buy two new I've decided to ELASTOFIT, 1 driven, filled 4 liters a round and two weeks ago remains the air in the tire.
Can only report on positive, two bottles were more expensive as a new inner tube, but no risk was being damaged during installation of tires