Gasoline

I use the same as Tracy in everything from the one cylinder two stroke to the modern day 8 cyl guzzler.  Non ethanol is too much of a hassle for me to find and transport, that being said I would always use that if available in things that get little use.

My two lawn machines sit all winter with E10 in them (treated) and fire right up in the spring.

My eldest tractor (1950) spends most of its time under cover in the bard.  It is stored defueled.

tractors with Sta-bil in the tank for storage.

I had nothing but problems trying to use regular with E10.

Using premium  no E10 has made a big difference.

i wanted long term stabilization,,,,because my gasoline tank only gets new fuel when it is empty,,,about every 2 years,,,,and i use that gasoline for everything ,,,mowers chain saws,,and my 170 gas,,,,they all sit a lot,,,until needed

i found a product called PRI-G,,,,they also make PRI-D,,,, one for gas and one for diesel,,,and they claim it will stabilize the ethanol in the fuel too,,,so i started using it about 5 years ago,,,,never had any trouble with the stored fuel,,,,it is always fresh,,,,i just had gasoline put in the tank a month ago,,,treated it with PRI-G when it was put in,,,,last load of gasoline had been in the tank for two and a half years,,,,,not one speck of a problem,,,,

just my opinion,,, but,,, i think PRI  is better than stabil,,,it cost more but you use less per gallon,,so it may be cheaper in the long run,,,BUT you cant find it at walmart,,,not sure about parts stores,,,,i get it on line when i need it,,,,for me i wont go back to stabil,,,,,PRI-G or D for me,,,all the time in all stored fuel

my .02

ocharry 

Jim-  You noted 'leaded fuel'... it's a very common misnomer that antique cars and tractors somehow 'need' leaded fuel.  I've had guys tell me I'm gonna ruin my '24 Model T and '29 Model T Fords on regular pump gas, but they're wrong-  TEL was 'available' but only in select circumstances, as early as 1923, but it saw no substantial proliferation of use until midway through WW2, in high altitude supercharged piston aircraft engines.  After the war ended, it became much more common in automobile fueling stations... but it wasn't a 'necessary thing'.

It only BECAME necessary after automotive manufacturers realized that they could skimp on production, by just relying on requiring leaded fuel, and as such, it is really only necessary in SOME automotive engines- particularly two categories: low grade engines (ones that don't use hardened valve inserts) and high-compression ones that wouldn't run full-advance or full horsepower, or high altitude... without it. 

Your tractor's engine is an INDUSTRIAL engine- not only was it designed to not need tetraethyl lead, it doesn't even need GASOLINE... they were designed to run on a myriad of fuels, and factory available with PROPANE for mobile... and would burn natural gas in stationary applications as well.  There's no adding TEL to Propane and NG.

This is same for ALL industrial engines-  if they're true industrials, the valve seats and valves are absolutely FINE without TEL.

Ethanol 10 is fine, but only as long as you pour it in, and run it through.  Don't leave it sit in storage- Ethanol does not 'mix' with petroleum, it merely stays in 'suspension'... so the alcohol 'settles' to the bottom of the tank.  It's also very hygroscopic- it's a dessicant- absorbs moisture from the air, and from surrounding fuel, and collects it at the bottom, where the mixture corrodes dissimilar metals in your carbeurator, fuel line, sediment bowl and tank, and when you go to start it, you get straight water, then saturated alcohol, before getting any gasoline.  For long term, either run it dry, or use regular non-ethanol.  When you go for spring startup, dump all the 'storage' fuel into a separate can, pour in several gallons of fresh fuel, and get it running.  If the stuff you dumped smells 'sweet', then find some 'other' use for it... the investment you make in time and trouble will be much less than the frustration of a fuel system cleaning.

We have 2 stations within 10 miles that sell non-alcohol gasoline. Not a big deal to stop a time or two a year to get 2-3 cans. I have used this for several years in the old tractors that sit a lot and not had any problems, unlike the ethanol gas. Also use in the rototiller. I always shut the gas off and run till they die.

E10 in everything from the weedeater to the D17.  Never had an issue related to it's use.

AaronSEIA

That PRI-G sounds very interesting. I'll have to look it up!