no need leo its made for regular

 

Heck I did not know that!!!!! Thats cool you saved me some cash Thanks.. I like your Aviatar

 

Run mine for 1500 miles on regular, no problems.

 

i have always used reg in mine too.....looks like my avitar changed again nice !!!!!!

 

i thought you would like this one a lot better,good night my friend,

 

night frank...

 

I like this one better than the Ape Flipping me off good job Frank..

 

I rock the reg stuff.

 

Ive been told by Polaris Technicians that they tell them when there training that customers should only use Regular grade GAS. because the higher the octane makes it burn alot hotter which results in makeing the engine run hotter. NOT GOOD!!!! Also when youre payinoductsg for premium are you really getting premium. I have had 4 Polaris products and I have only used Regular and no problems.

 

higher octane burns slower & cooler.
Problems come from the premium "smog gas" oxygenated stuff...

 

I have to run Premium in our Raptors so why carry more than one jug?

 

i run premium in both my rzrs, but i run premium in my trailblazer ss too, anything i own that has a performance engine i run the best i can in it. i run 110 oxy gas in my yfz450 race quad, i ran like a half a tank of that in my race rzr once and i could feel the difference, the throttle response was much better and it ran smoother and accellerated harder due to reving quicker. but i wont run it in there because the lead in it will destroy the sensors. and you need to make sure its all out of the the engine and any components besides the fuel tank when you let it sit any time because it will eat seals out fast. but if it wasent for destryoing my sensors i would run it all the time

 

I used to use 91 until I read on here a while back that it is not necessary. Much easier to run 87 for me and cheaper.

 

2010 RZR S owners manual page 31 says, " when refueling, always use either leaded or unleaded gasoline with a minimum pump octane number of 87 R+M/2 octane. Do not use fuel with ethanol content greater than 10 percent, such as E-85 fuel"

 

Its my understanding that per gallon E85 has less energy then unleaded.. So I wouldn't say E85 has more power just cause your car runs better on it.. Its far from the truth.. Higher octane fuel will give better performance in a higher compression engine because of the reasons mentioned above.. Running high octane fuel in a engine built for regular does nothing but waste money.. This comes up every few months lol Run 87 your RZR is not a High compression engine inless you have rebuilt it..

 

It has less energy than regular per mole gets way worse gas mileage and it also has a higher octane rating and dynos out 20% more horsepower when mapped correctly. All this on the stock motor. I can even map it back to run on the good old premium stuff. Do you guys need to see a dyno chart or something? Anyone who wants to get the most power out of a stock STi or EVO goes to E85. Why...because it is higher octane which allows you to advance your timing and alter your fuel maps. Do you have to squirt more fuel in..yes...does it make more power on a stock low compression engine...yes...much more.

Stock engine block and turbo.

06 STI- 350whp/448wtq - Stock turbo+ E85! - IWSTI.com: Subaru WRX STI Forums

Stock engine block and turbo.

DownSTi's 06 + EQ-Tuned + VF39 + E85 = WOW!!! - IWSTI.com: Subaru WRX STI Forums

Go to IWSTI or Nasioc or any EVO forum and type in a search E85 and stock.

 

All that said higher octane fuel will not help your RZR that is naturally aspired. Go turbo and its a who different ballgame.

Higher octane fuel does not make more power with nothing else is changed, it only allows you to set up your rig to make more power. But if you have the capibility to inject more fuel and air, the higher test stuff will make a difference.

 

Not sure what your saying.. Your sti is made to run on high octane gas right? I said a high compression engine will perform better with higher octane gas.. E85 and Premium are both high octane gas. Still doesn't change the fact that E85 has less energy per gallon. Lol which really doesnt matter cause it has NOTHING to do with a RZR and what octane.. Again a RZR isn't built for high octane fuel it doesn't make it faster or burn cleaner

 

We are just confusing two issues. E85 is slower burning, and yet higher octane. This is the same for high octane gas it absolutely is slower burning...and as a result resists pinging.

On our RZR's if you are not pinging you dont need higher octane. You will not make any more power on the high test stuff. If you are boosted (think STi EVO, or boosted RZR) or have a high compression engine, it requires high test to resist knock. It doesnt make more power by itself, it just allows the engine to run without detonation, which makes more power.

 

No offense but the bolded parts are absolutely not true...I really dont want to debate it much either because there is no point. Any DSC would show that this is not true. Also, I run E85 and 91 octane on different fuel maps in my STi for Autox...E85 makes WAY more power and my compression ratio obviously does not change.

I know people can read Wiki and know it all, but some info is misleading and for those that have no scientific training is just a nice overview.[/quote]
Of course your sti will make more power because you run different fuel maps and it is a turbocharged engine. With your new fuel maps your computer can add boost which will increase cylinder pressures and therefor make more power. I agreed that it can make more power if it is used in higher pressures like turbochargers or higher compression engines. When used in an n/a engine designed for 87,89, 0r 91 octane e85 will make 10-30% less power. There are lots of real world tests out there that prove this. One could even look at the mpg's of flex fuel vehicles and you will see that they have lower mileage when running on e85. It's a proven fact. Throw higher cylinder pressures in the mix and e85 comes out on top. That still does not mean that just because premium fuel has a higher octane rating than regular, that it makes more power. Yes it can be used with higher cylinder pressures which will create more power, but that is because of the increased pressure and not the fuel itself. the problem with regular is that it will detonate too early and cause pinging in high pressure applications.The problem is most people get caught up on the word "premium" and think it is better gas when in reality it is the exact same fuel with an additive to raise the octane level. If you don't like Wiki there is tons of other information out there about octane ratings that can be found very easily. I used to believe that the octane rating increased power until I learned the truth several years ago. Wiki gives a pretty good explanation of this and frankly I didn't find it misleading in any way.

 

No offense but the bolded parts are absolutely not true...I really dont want to debate it much either because there is no point. Any DSC would show that this is not true. Also, I run E85 and 91 octane on different fuel maps in my STi for Autox...E85 makes WAY more power and my compression ratio obviously does not change.

I know people can read Wiki and know it all, but some info is misleading and for those that have no scientific training is just a nice overview.
Of course your sti will make more power because you run different fuel maps and it is a turbocharged engine. With your new fuel maps your computer can add boost which will increase cylinder pressures and therefor make more power. I agreed that it can make more power if it is used in higher pressures like turbochargers or higher compression engines. When used in an n/a engine designed for 87,89, 0r 91 octane e85 will make 10-30% less power. There are lots of real world tests out there that prove this. One could even look at the mpg's of flex fuel vehicles and you will see that they have lower mileage when running on e85. It's a proven fact. Throw higher cylinder pressures in the mix and e85 comes out on top. That still does not mean that just because premium fuel has a higher octane rating than regular, that it makes more power. Yes it can be used with higher cylinder pressures which will create more power, but that is because of the increased pressure and not the fuel itself. the problem with regular is that it will detonate too early and cause pinging in high pressure applications.The problem is most people get caught up on the word "premium" and think it is better gas when in reality it is the exact same fuel with an additive to raise the octane level. If you don't like Wiki there is tons of other information out there about octane ratings that can be found very easily. I used to believe that the octane rating increased power until I learned the truth several years ago. Wiki gives a pretty good explanation of this and frankly I didn't find it misleading in any way.

Look...higher octane fuel burns slower...you dont agree...correct?

 

My stage 1 turbo is set up to run on pump premium fuel at 11psi of boost. I have run both pump premium 92 octane and 100 octane race fuel mix and couldn't tell any difference in performance/power. For me the higher octane is just a safety factor against detonation. At home I run pump premium. Last trip to Glamis I ran a mix of about 96 octane since I was 1100 miles from home and didn't want to have any risk of detonation...

 

i always use preminum in my atvs

 

At our local refinery the isomerization unit is used to raise the octane rating of the gasoline. This process interchanges carbon atoms with hydrogen atoms. Not sure how much blending takes place. We are not supposed to have winter blends but I am not familiar with the process enough to say if it happens or not.

 

every time this gets brought up it ends the same .... no mater what is shown proof anything people wil not belive the truth...if you eng doesnt need it useing high octane is a waste.... but do what you want fact is fact i use reg and have because i needed high octane for my quad used it in mine but it did nothing but waste money.... well i guess well see this again in a few months and the same stuff will be said over and over....... and for nothing the non belivers will still swear it makes a big diff....lol as said it will in a eng built that needs it....

 

This gas issue is really a can of worms. Now I know!!!May-be Po Po has to many cans of worms to open up!!!Its like every time you start a Tread its a can of worms!!!Lets start the biggest can of worms again Po-Po Air Intake.:rofl3::rofl3::rofl3:

 

Alert, Chemistry nerd stuff...

An isomerization unit only converts one molecule with a certain molecular weight into another. To do this they (the isomerization unit) take linear hydrocarbons and turn them into branched isomers to increase the octane rating. These branched hydrocarbons burn at a slower rate when compared to their linear counterparts.

 

So doesn't burning 93 octane vs. 87 octane lead to carbon deposits if the higher rating is not needed?

 

WOW!!!!!!! It never fails to see a forum with this exact same argument.

One person hit the nail on the head when they stated... If you want to spend the money on premium fuel (when using a stock engine) then go ahead and waste your money. After all it is your money and you can spend it how you see fit.
For me I will use the suggested fuel by the manufacturer which is 87 regular fuel. No need to use anything else since the engine was deisgned for that rating of fuel.

Now to all the E85 haters out there (just kidding) this is the best and most economical racing fuel out right now. It is cheap (2.00 a gallon in Ks) and it is blended so that my 15:1 compression 2 stroke Banshee with Electronic Fuel Injection will not detonate under power. With the fuel change from VP C12 I gained 8HP just by switching to E85. Of course we had to adjust the map roughly 20-30% richer (since you burn more with ethanol) to maintain proper jetting but that is all we did and picked up 8HP at the wheels. Also my engine temps dropped an astounding 40 degrees under load, it is a proven fact that ethanol burns cooler than gasoline or leaed race fuels.

So if anyone tells me that E85 doesnt perform better than race fuel I will disagree with them since I have witnessed it with my own machines and I run the E85 everyday. I am working on finding a vendor so I can order pure ethanol and blend it myself with 91 pump gas to regulate the mixture since sometimes you don't know what you will get at the pump.

 

I don't see much disagreement on whether the stock rzr engine needs premium. It doesn't. The argument is about the differences in premium & regular, not how it effects the RZR.

 

Soo....... How is the weather? Higher octane makes those suped up cars go faster huh? I always thought it was the amount of sponsor stickers and size of the coffee can coming off of the exhaust.

 

Back in my gear-head days I had a big block ford that was pumped to the gills. No-matter what type of fuel I would put in it the darn thing, It would ping,knock run like crap no matter where timing was set. When I was working at Shell Refinery one day. I spoke with one of there fuel experts. He told me to add one gallon of diesel to every 20 gallons of gas. I did what he said and that Big Block Ford never ran better. What I think by adding Diesel to gas did, was slow the burn rate down of the fuel which probably made the engine run cooler and also provided more lubrication to the engine. I may try this mix in my rzr its 20 to 1 mix

 

the higher the octane = the slower, cooler but more complete the burn is what i was tought for years and it seemed the case but a few years back i did a lot of research on fuels and the effects in my drag boat engines.

the fact is that octane rating is ONLY a measure of detonation resistance. deflagration is measured differently. you can have 2 different fuels with identicle octane numbers that have a different deflagration or burn rate.

imo you are throwing money out the door if you run anything other than 87 on a motor that was designed for 87 unless you have altered the timing or added compression.

i dont know for sure about pump gas but with race fuels , you will actually reduce speed and power with a higher octane when run in an unmodded engine designed for 87.

i keep 200 gallons of 100LL fuel here that i run in my race boat. i have run it in stock outboard motors designed to run on 87 and lose 2- 5 mph ( depending on motor , hull and setup) but you could run that fuel out and refill with 87 and gain the speed right back.