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Well, this is kinda getting off-topic, but fuel stabilization is considered necessary for even a sealed container. My mower repair people are adamant about needing gas stabilizers (which they don't sell) to keep fuel good for more than a few months. That's in a sealed gasoline can. They routinely service 2-cycle engines that are gummed up because of old gas.
Yes, tires create heat, which lasts maybe an hour after the drive is done. So that's not going to keep air pressure in the long run. Besides, if your tires are low, just fill 'em up!
As to lubrication, no one ever talks about that with regard to unused cars. But gee, if you don't drive the car, there is no reason why you can't just start it up every week or so, even without insurance. Liability and collision risks are pretty low if it's not moving. Same with battery charging.
Starting it doesnt keep the transmission/ steering rack/drivetrain lubed up and operating correctly. People with experience owning and maintaining rarely driven cars certainly talk about the lubrication of parts other than the engine. A true expert will say driving it is just as important as running the engine.
Sure low tires can be filled up, thats not the point. The tires sitting with low pressure is the issue. Low pressure causes increased load on the sidewall even when stationary. Weakening the sidewall... which is the most fragile part of the tire in the first place.
2 cycle gas sitting in an engine is totally different than normal gas sitting in an engine. The addition of oil makes it more gummy and certainly causes issues. Not true for normal gas. The octane rating also makes a difference, premium has a longer shelf life than standard. I wouldnt suggest letting gas sit for 6 months. 3 max would be ideal, but either way keeping parts lubed correctly is a more pressing issue for a rarely used car.
Your right, we are getting off topic. But we do that all the time here on the forum... lol. And I will talk cars just as much as I will insurance... lol. Not my car, just sharing my knowledge from owning cars in similar situations. And if you go the rental route, its a moot point either way. Plus renting a car is more fun imo unless its a just really nice car that she owns, lol.