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post #1 of 23 Old June 25th, 2017, 08:09 PM Thread Starter
 
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Gasoline Question

I know that this has been asked but not sure what to do.

Manual says to use 87 and dealer told me to use 91 (TX has different octane, we have 86) Have not put gas since I bought it. Not sure which one to use. I've read people exhaust turning red when using low octane. Is there a way to know which gas the tank has?! I am being paranoid?! Which should I use?!

Thanks all
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post #2 of 23 Old June 25th, 2017, 08:17 PM
 
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Re: Gasoline Question

Just put premium in, and be done. The price difference isn't much, and it will like the better fuel. Not only that, but the fuel might have a little more stability while you have it stored.
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post #3 of 23 Old June 25th, 2017, 08:23 PM
 
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Re: Gasoline Question

Premium and be done....

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post #4 of 23 Old June 25th, 2017, 08:51 PM
 
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Re: Gasoline Question

I use premium in all of my powersports machines. The tank on the rzr isn't huge so the price difference won't be drastic


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post #5 of 23 Old June 25th, 2017, 08:54 PM
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Re: Gasoline Question

Premium and Torco.
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post #6 of 23 Old June 26th, 2017, 03:13 AM
 
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Re: Gasoline Question

I'm running 90 octane marine fuel in mine. ALL of my powersport toys get ethanol-free fuel. I've seen too many trashed tanks and lines because of corn.
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post #7 of 23 Old June 26th, 2017, 04:05 AM
 
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Re: Gasoline Question

Quote:
Originally Posted by OffRoadJoe View Post
I'm running 90 octane marine fuel in mine. ALL of my powersport toys get ethanol-free fuel. I've seen too many trashed tanks and lines because of corn.
This ^^^^

You can find a list of stations in your area that sell ethanol-free gas here: https://www.pure-gas.org/index.jsp

I buy 87 ethanol-free when I can because I like to use lower octane in my air-cooled engines, but 90/93 is fine for liquid-cooled engines.
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post #8 of 23 Old June 26th, 2017, 04:56 AM
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Re: Gasoline Question

Guess I will be the fly in the ointment, running higher octane fuel in an engine that does not need it is less performance and a waste of money and premium is not better fuel 87 and premium have the same additives and clean just the same

The point of higher octane is to slow the burn down on a engine that requires it like a higher compression engine to keep it from pinging.

So if you have a engine that does not need it and you put higher octane in it you are slowing the burn down and moving peak power point in the compression stroke backwards.

Do a google search on this. Here is one

http://www.truecar.com/blog/2011/03/...s-regular-gas/

Todd

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Last edited by Hunterworks; June 26th, 2017 at 05:00 AM.
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post #9 of 23 Old June 26th, 2017, 05:28 AM
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Re: Gasoline Question

Quote:
Originally Posted by Hunterworks View Post
Guess I will be the fly in the ointment, running higher octane fuel in an engine that does not need it is less performance and a waste of money and premium is not better fuel 87 and premium have the same additives and clean just the same

The point of higher octane is to slow the burn down on a engine that requires it like a higher compression engine to keep it from pinging.

So if you have a engine that does not need it and you put higher octane in it you are slowing the burn down and moving peak power point in the compression stroke backwards.

Do a google search on this. Here is one

Five Facts of Using Premium vs. Regular Gas - TrueCar Blog

Todd
Nail right on the friggin' head! Thank you Todd!!!
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post #10 of 23 Old June 26th, 2017, 06:05 AM
 
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Re: Gasoline Question

Yep, thanks Todd. I've given up arguing about this, just read your owners manual!

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post #11 of 23 Old June 26th, 2017, 06:26 AM
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Re: Gasoline Question

We can move on and argue about what oil is the best now!!! LOL

BTW, that does not matter much just don't let it run out!!!

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post #12 of 23 Old June 26th, 2017, 06:37 AM
 
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Re: Gasoline Question

Quote:
Originally Posted by Hunterworks View Post
Guess I will be the fly in the ointment, running higher octane fuel in an engine that does not need it is less performance and a waste of money and premium is not better fuel 87 and premium have the same additives and clean just the same

The point of higher octane is to slow the burn down on a engine that requires it like a higher compression engine to keep it from pinging.

So if you have a engine that does not need it and you put higher octane in it you are slowing the burn down and moving peak power point in the compression stroke backwards.

Do a google search on this. Here is one

http://www.truecar.com/blog/2011/03/...s-regular-gas/

Todd

I completely agree with the octane statements here. I merely stated that I won't run ethanol blended fuels in any of toys, and all we have around central Florida is 90 octane marine fuel. If I could find 87 Marine, I would use it.
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post #13 of 23 Old June 26th, 2017, 06:56 AM
 
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Re: Gasoline Question

Same here, good luck finding anything clear under 91 out here. I end up running a mix of fuels, just depends. I can tell you though I have run treated ethanol fuel and never had an issue with any of my power tools, RZR or sleds. So much so, that I stopped even looking for clear as it was hard to find and even harder to find a place I can pull the toy hauler into to fill up. However, time to eat a little crow, as I just had to replace the carb in my Onan 4k generator. Wasn't even a year old and only had 30 hours on it. Completely non-rebuildable and extremely susceptible to varnishing, even with marine stabil treated fuel, so looks like I am going to have to find a place to fill the TH with. I talked to Cummins and they are now recommending you run your generators every 2 weeks with load for 30 minutes, or just plan on spending $344 on a carb regularly. What a bunch of crap.
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post #14 of 23 Old June 26th, 2017, 08:12 AM
 
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Re: Gasoline Question

The main thing to look for is Ethanol free. I purchase 91 octane because it is the only ethanol free I can find. I also look for gas stations that have high volume, in my mind this is better.
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post #15 of 23 Old June 26th, 2017, 08:44 AM
 
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Re: Gasoline Question

The link Todd provided includes some good information...but I didn't read one point I use. Higher octane means there are more additives in the gas...that means for 1cc of fuel, there are fewer combustible molecules present. Thus each cylinder charge has less combustible fuel...and you get less "bang" and thus less power.

Good ol' Thermodynamics!!

Pirate
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