Fuel quesstion for my 582

[beeryboats]

Hi all, and happy thanksgiving!
Modified rudder pedals are back in and I'm just about to turn the key on my remaned engine. The question of fuels and storage has come up. I can take gas cans to my not so local field for no lead auto gas, but would have to tow the plane to my local airport for avgas. I'm thinking of going with the no lead auto gas. Should I doctor it up with oil for the break-in even though it has oil injection? I would hate to burn up the engine waiting for the oil injector to catch up. And I will not fly in the winter due to storage issues, so how well does that no lead auto gas store? Additives?
thx jay

[jiott]

If I were to store my plane for more than a couple months, I would drain most of the Mogas out and fill the tanks (and run the engine) with 100LL. Then you can store for year+. Mogas fuel stabilizers like Sta-Bil may work, but there hasn't been enough collective experience in my view to trust it in such an expensive, critical component.

[Danzer1]

Mogas fuel stabilizers like Sta-Bil may work, but there hasn't been enough collective experience in my view to trust it in such an expensive, critical component.

IMHO, Sta-bil has been around for more than 50 years and works fine in all types of engines. Millions of gallons of history around for this product. What it doesn't do - it won't prevent fuel volitility from degrading over time (mogas or 100LL), so the longer any fuel is stored the less "ignitability" it will have.

Google "high octane gas" in your local area - you can usually find a few places around that will sell some without ethanol and let you pump some into cans - might be closer that the airport.

[jiott]

I use Sta-Bil in all my other engines, motorcycle, lawn mower, etc. but I just haven't heard of much use in aircraft engines; maybe I am wrong and just am not in the loop. What I have heard many times is to use 100LL for long term aircraft storage.

[TY2068]

I'd just follow the Rotax procedures for inital run, break in, and storage. Everything is pretty well laid out for short and long time storage. Are you refering to Non-Ethanol auto fuel or Ethanol blend ?

[Danzer1]

I use Sta-Bil in all my other engines, motorcycle, lawn mower, etc. but I just haven't heard of much use in aircraft engines; maybe I am wrong and just am not in the loop.

Still not following - the 582 referred to has variants in thousands of snowmobiles and boats. I don't think the fuel knows what kind of engine it's running in, nor do I think the engine knows what kind of vehicle it's in. There is no difference. Yet you recommend running 100LL, which is contrary to Rotax's recommendations. I don't get it.