I know my Sthil and Echo equipment require a minimum of 89, and my 2 stroke waverunners run on 93.

 

ethanol free is the big kicker... hopefully congress passes the ethanol ban this year due to low corn production (which has little to do with the actual amount of ethanol supply in reality)

but I run 92 in everything I own. It's usually still only 20-30 cents more per gallon, I honestly believe it does get extra mileage to more than cover the cost. I've done the math so many times back and forth years ago before I ran exclusively high octane and every single time it proved itself again and again, I did not alter my driving habits.

Only downside is that the 93/93 sits in the tank (at the gas station) much longer as nobody uses it. But it's all I use

 

I run 93 in ALL my small engines: Stihl chainsaw, Shindaiwa leaf blower, Honda air compressor, Honda pressure washer, Honda string trimmer. I also use the Marine formula of StaBil--it has salt inhibitors (live on the Bay) & is designed for use with ethanol gas. It makes a HUGE difference....I don't have to clean all the crap out of the carbs every spring. I also use Lucas fuel treatment occasionally on everything. All my stuff gets used for business, so it's my bread & butter.


One of the KEYS is to not buy too much gas that you won't use within 30 days as it loses a LOT of efficacy over time.

 

http://www.hardcoresledder.com/forum...your-rush.html

Nice read here on stabilizers and storage from a snowmobile site.

 

I also use 92 for all my small engines. I have a few 5 gal cans I keep on hand and always put a sticker on them with the date I filled them. I also make sure to add the correct amount of stabilizer to them, the small engines will run like crap on old gas.

course, who knows how old it is already when you buy it...

when gas was 80 cents a gallon, 20 cents more for high test was significant. Now that it's $4, what's 20 cents? nothing really.

 

Heres a stupid question.If I run my truck on 93 when I can afford it and 89 when I cant will that be detrimental to my engine?Sorry for the thread jack but just thought it paralleled your question.

 

Octane ratings are not indicators of the energy content of fuels. It's only a measure of the fuel's tendency to burn in a controlled manner, rather than exploding in an uncontrolled manner. Where the octane number is raised by blending in ethanol, energy content per volume is reduced. So yes, a higher octane can allow your engine to run to its full potential, but the octane does not really "give" you any power. You can also actually run an octane that is too high and won't run right if your engine was not designed for it.

E85 is a great example. E85 has much less energy than gasoline. E85 capable cars are capable because they have massive injectors compared to a gasoline car. They can be duty cycled very little to run gasoline, hence being able to run both fuels. The kicker, is ask anyone who has run E85 and what their mileage is on a tank on E85 compared to gasoline.

Some turbo guys use e85 in place of race fuel because of the high octane, and that allows them to run more boost and a more aggressive ignition timing curve, BUT they use a hell of a lot more fuel to do that.

 

run 93 in my truck and the mileage is better and it runs better. i also remember back in the 60s premium was 101 octane and regular was 90 so yes your older cars would run good on regular gas

 

I never knew that thanks for the info wish they still sold that nowadays lol

 

me to and gas was down to 15 cents a gal during gas wars of course that was mid late 50s