So, reading a thread about inner tube life span, got me thinking. Can you deflate & replace tyres when slime has been added to the inner tubes?
With that stuff inside, the tubes will surely outlast the tyres.

Slime does dry out, so I'd be surprised if it really did outlast a tire.

Sure, why not? Even without slime, my tubes regularly outlast my tires.

As long as the Slime is still liquidy it should still be good. One can feel the tube and the mushiness of the Slime inside. Having said that it's often the valve and the Slime's gummying it up that kills the Slimed tubes. But it isn't too hard to find out if your tubes are still good enough to use. Install them, inflate and ride then see what happens. Andy.

If your valves have removable cores, you can take the core out of the valve and soak it in ammonia to dissolve the slime. Rinse thoroughly, and you're back in business.

+1. great point. Andy

Yes, but does the slime clog the valve with the core removed? I suppose this is easy to overcome with the use of a matchstick & keep prodding the hole to let the air escape.

I have extra cores, so when I take one out to clean, I immediately replace it with a good core. But I suspect the bore of the valve stem without a core is too large for the sealant to effectively plug.