Premium or regular unleaded

[motownbrowne]

Not sure about Tomah, Wi, but in Hudson at the fleet farm, they sell ethanol free 89 octane. That's what I would use in a gas tractor.

 

[Grouse09]

Any benefit to adding "Ethanol Shield" to the E10 gas? Its about a dollar an ounce. 2 ounces per 5 gallons.

 

[Copperhead]

Can't hurt, especially if fuel sits for extended periods of time.

 

[David_Kb7uns]

Unless your running several tanks a week use the Ethanol Free. Less water problems and less corrosion with the ethanol free and everything starts on the first or second pull.

David

 

[ray66v]

In 99% of engines made, the compression ratio determines the octane fuel required.

Low octane fuel will ignite during the compression stroke, if used in a high compression engine.

This causes knocking, and high temperatures, which and can damage the engine.

If your engine was made for regular 87 octane fuel, and you a put higher octane in it, all you got out of it, is a lighter wallet.

Even the oil companies will tell you that, and they make a ton of extra cash off the people who do it.

If it makes you feel better to do it, enjoy. But, it's not making any difference.

 

[MossRoad]

In 99% of engines made, the compression ratio determines the octane fuel required.

Low octane fuel will ignite during the compression stroke, if used in a high compression engine.

This causes knocking, and high temperatures, which and can damage the engine.

If your engine was made for regular 87 octane fuel, and you a put higher octane in it, all you got out of it, is a lighter wallet.

Even the oil companies will tell you that, and they make a ton of extra cash off the people who do it.

If it makes you feel better to do it, enjoy. But, it's not making any difference.

Not so true anymore.... our 2013 Impala is 11.5:1 and recommended fuel is 87 octane.

 

[KennyG]

Not so true anymore.... our 2013 Impala is 11.5:1 and recommended fuel is 87 octane.

Things like engine management systems, variable valve timing, etc have reduced the direct correlation between compression ratio and required fuel. If I recall correctly, the first Ford Ecoboost engines required mid range to get max power but ran fine on regular, with just a bit less peak power.

 

[Grouse09]

Thanks guys. Interesting stuff. I will go thru my small engines (ice auger, chainsaw, backpack blower, weedeater), and powerwasher {unleaded only - not mix}, and see which octane is recommended with each. I had a chainsaw that ran one day, but not the next. Don't want to go thru that fiasco again and have protected with E free since.

 

[dieselcrawler]

I cannot get ethanol free gas unless I buy the higher grade stuff. I use so little gas, most of my stuff is diesel. But the chain saws, weedeaters, and atv's sit for long periods of time so its worth it to me to get good gas. I think I bought 15 gallons of gas all summer.

 

[Foxl3830]

Hello just my thoughts most of my equipment is getting older so I do believe it was designed to run on reg. And have had no problems so far in all my gas equipment I run gas stablelizer as soon as I buy gas at the pump I add it to the cans I'm the same way most of my items set except my lawn mowers I n season but I still just add stable as soon as I by gas! I did have a chainsaw go down last winter when I tried to start it carburetor/reed problem probably from the ethanol just bought a whole ne carb from Internet cheap and was running in less than a week other than that I also have a 9.9hp Honda 4 stroke out board I use maybe 3 weeks a summer I do the same to it the only thing I do different to it is I add a bit more stable to the gas tank before storage and run it for like 10 to 15min then I dump cas out of can and use in other equipment then start fresh in the spring/summer ok thanks hope this helps so far so good! I have a 8n and since I got the newer Kubota I only brush hog with it on purpose just to try to burn a tank or two of gas threw it just to have newer gas in it I also put more stable in it right be fore winter thanks to all a great place to learn on this site!