Fuel

[Hammermechanicman]

My gas is better than your gas

LOL

 

[Old Gweilo]

From a Web search:
Based on the search results, here's a comprehensive answer regarding ethanol-free gasoline versus regular gasoline for lawnmower engines:

Benefits of Ethanol-Free Gasoline​

Ethanol-free gasoline is generally considered better for lawnmower engines and other small engine equipment for several reasons:

1. Reduced corrosion: Ethanol can be corrosive to metal parts, including carburetors, which can lead to engine damage over time[1][2].
2. Better stability: Ethanol-free gas has a longer shelf life and is less likely to degrade when stored for extended periods[1].
3. Improved performance: Many users report easier starting, more consistent running, and fewer carburetor issues when using ethanol-free gas[3].
4. Less moisture absorption: Ethanol attracts water, which can lead to engine problems. Ethanol-free gas is less likely to absorb moisture from the air[2].

Drawbacks of Ethanol-Blended Gasoline (E10)​

Regular gasoline, which typically contains 10% ethanol (E10), can cause several issues in small engines:

1. Component degradation: Ethanol can degrade plastic and rubber components in the engine[2].
2. Higher operating temperatures: E10 can cause engines to run hotter, potentially leading to increased wear[2].
3. Carburetor problems: Ethanol can lead to gumming and clogging of carburetors, especially when equipment is stored for long periods[3].

Conflicting Information​

It's worth noting that there is some conflicting information regarding the use of ethanol-blended fuels in small engines:

1. Manufacturer recommendations: Many small engine manufacturers have designed their products to run on E10 fuel[5].
2. Water absorption: While some sources claim ethanol increases water-related issues, others argue that E10 can actually help prevent free water formation in the fuel system[5].
3. Fuel shelf life: Some sources suggest that E10 has a minimum shelf life of six months, which may be sufficient for many users[5].

Conclusion​

While there are arguments on both sides, the majority of evidence suggests that ethanol-free gasoline is preferable for lawnmower engines and other small engine equipment. However, if ethanol-free gas is not readily available or is significantly more expensive, using E10 with proper maintenance and storage practices can still be acceptable[3][4].

Recommendations​

1. If available and affordable, use ethanol-free gasoline in your lawnmower.
2. If using E10, consider adding a fuel stabilizer, especially if the equipment will be stored for extended periods[3].
3. Regardless of fuel type, follow proper storage and maintenance procedures, such as running the engine dry or filling the tank completely before long-term storage[5].
4. Consult your lawnmower's manual for specific fuel recommendations from the manufacturer.

By following these guidelines, you can help ensure the longevity and performance of your lawnmower engine, regardless of the fuel type you choose.

Citations:
[1] https://www.bellperformance.com/blo...n-your-lawn-mower-or-not-that-is-the-question
[2] https://www.consumerreports.org/cro...ethanol-can-make-small-engines-fail/index.htm
[3]

https://www.reddit.com/r/lawnmowers/comments/16bua5i

[4] https://www.lawnsite.com/threads/is-ethanol-free-gas-worth-it.479827/
[5] https://www.mncorn.org/2022/03/01/setting-the-record-on-using-ethanol-in-small-engines/

Yep, just because the manufacturer says your engine "can take it", doesn't mean E10 is as good as E0. It isn't.

 

[jes_in_sac]

Everything in life is a tradeoff, particularly anything associated with equipment, because all engineering is a compromise of one thing for something more desirable. Sure, the purest fuel you can get will work better, but enough to warrant the extra cost and bother? That's up to you. I'm got lots of gas powered equipment on the farm and buy a few months worth of regular gas at Sam's Club, filled in multiple small tanks. I use Stabil360 Marine stabilizer, and no problems. The biggest problem is with older 2-stroke carbs that could not handle any amount of ethanol, but the rebuild kits for them all have materials that are compatible. So basically it's up to you how much you want to spend and how much effort you want to put into equipment gas related "insurance", but usually something else will need attention on it before any gas issues arise. Of course, where I live in CA, there is no ethanol-free gas available.