long term non-use/storage

FWIW, in 30 years of professional and shade tree engine mechanics, it “seems” Ethanol gas is good for a few months un treated, maybe a year treated. Non E gas 6 mo plus untreated year plus treated.
AV or race gas 2 years, no treatment.
EFI engines will handle questionable fuel better (not from a performance or detonation standpoint ) because it’s harder to gun up a sealed higher pressure system.
For carb engines they’re more susceptible.
Having a bunch of seasonal use engines around the household. I’ve started running AV gas in the small 2 cycle stuff and things that may sit indefinitely like the backup generator. No need to treat/winterize then. I can turn the chain saw off in February and fire it back up a year later, 2 pulls, no gummed up carb. For example.
The that with untreated 87 pump gas and There’s a great chance that you’ll be pulling the carb apart.

steveh27 wrote:
UPDATE:
I got the starter battery replaced and started it. The engine just purrs. I let it idle for 15-20 minutes.

That’s great to hear!
I read your health situation. Hope that goes well and you’re back on your feet soon!
Don’t mind some of the folks here. Pretty self righteous, some of them.

I’d add, if you can drive it yet this year, run the old gas out of it. Shouldn’t take too many little trips to burn up the gas. BTW you could insure it for a month or so if that’s concerning to you.
I wouldn’t let the old gas sit another year. If can’t run the gas out, I’d figure out how to siphon or pump it out. And use it in non critical equipment or give it to a neighbor or something.
I would NOT fill the tank. Yes it’s recccomended by many, but unless you use it before it goes bad (lots to consider with this definition of bad and how it’s used), a full tank of bad gas is can be more problem than it’s worth.
I let every seasonal vehicle/toy sit very low on good treated fuel. No condensation issues. And if there was, a full tank of gas with ethanol and maybe a bottle of Heet, worst case will eat up the water.
If you must or plan to let it sit more than a year, IMO, run it as empty as possible. Add 5 gal or so of. AV gas. Run a little av gas thru the fuel system and park it. AV gas will store ok for up to 2 years. Then dilute/fill with regular gas when ready to run it again.

Take care

Looks like you have it mothballed pretty good. If nothing else start it up every month or so. I am not a fan of letting the engine getting up to running temp. Hot oil falls right back down into the oil pan faster than cooler oil. If you can't drive it at least put it in & out of gear to get the tranny oil sloshing around.

8ntw8tn wrote:
A little different situation, but you may find some nuggets you can use: When we head for Texas each fall I put Stabil in our Durango and run it for awhile to get the treated fuel throughout the system. Then I connect a battery maintaner to the battery and leave it for 6-7 months. Now, it is garaged, and it's for a shorter term than you're intending, but I believe the packaging on Stabil indicates it's good for a year. Iowa allows me to remove the insurance with no penalty and I remove all but comprehensive coverage. At least then it's covered if a tree falls on the garage. I've been doing this with the same vehicle for the past 9 winters and it's always fired right up when we return in the spring. Hope this helps.

That sounds exactly like what I've been doing for 20 years. This time it'll be a little longer.

A little different situation, but you may find some nuggets you can use: When we head for Texas each fall I put Stabil in our Durango and run it for awhile to get the treated fuel throughout the system. Then I connect a battery maintaner to the battery and leave it for 6-7 months. Now, it is garaged, and it's for a shorter term than you're intending, but I believe the packaging on Stabil indicates it's good for a year. Iowa allows me to remove the insurance with no penalty and I remove all but comprehensive coverage. At least then it's covered if a tree falls on the garage. I've been doing this with the same vehicle for the past 9 winters and it's always fired right up when we return in the spring. Hope this helps.

UPDATE:
I got the starter battery replaced and started it. The engine just purrs. I let it idle for 15-20 minutes.

Michigan has the highest insurance cost in the country. They made some changes which would affect me in August, but still costly.

Bumpy, I would only be driving around 1 residential circle block. Yes there is a risk, but not much driving by only about 40 houses. Otherwise I would just run it in the drive way.

steveh27 wrote:

I may get a company to deliver and install the starter battery. Then I could start it in the driveway and maybe circle the block carefully without insurance. That would not be legal, but it should be safe.

so you are not spending $1000 for insurance (or less) and opening yourself to a law suit where you lose everything?
bumpy

Yes I could insure it for over $1,000 a year, wasted. When I get out of the hospital in 2-3 weeks I will not be allowed to leave my house for 3 months, and then with separation as I will have no immune system for over a year.

I may get a company to deliver and install the starter battery. Then I could start it in the driveway and maybe circle the block carefully without insurance. That would not be legal, but it should be safe. I know that would not get the rpms up very high, but it would be better than nothing.

Yes I'm in the rust belt, but I've stored it iin my drive during every winter for 20 years. I do not drive it in the snow and salt. And it's in excellent condition.

It’s a class B, if you can drive, insure it and drive it for your running around once or twice a month. You can fit a lot of groceries in it . Sitting that long the brakes will rust up and brake and fuel lines will rust through. You do live in the rust belt.
Bob