Premium or Regular......07 Attak

[Tork]

Higher octane gas is not really better gas. Higher octane is just more knock and ping resistant. No radical timing or compression on these motors so lower rating is better

Well one way higher octane could be better is with a couple brands, premium has less ethanol. Ethanol gives you worse MPG for example

 

[bigbigrichie]

check the side of your machine its there
if u cant find it ill snap a picture of the tag for ya

 

[journeyman]

I use 87 myself, I believe that SrxSpec posted results from a dyno test that showed a loss in power with the higher octane fuel.

Sounds reasonable. I was thinking the same thing that this engine would run probably better with regular 87 octane. My UP buddy that has the 2007 ATTAK (my AVATAR in fact) said his dealer told him to run only premo. I found that strange and that's all he ran on our UP trip. Gee......you mean that thing could of been faster yet?? LOL!! WOW!!

PS: another thing...alot of places the 87 octane gas is fresher. Not many cars are running premo if you know what I mean.

 

[danq]

I think the side of the sled says 91 RON octane. That is not the octane rating on the typical american pump. subtract 4 from the RON number to get the american number. 87 american octane is the right stuff to use. do a search, this has been discussed before.

 

[bigbigrichie]

why does it say 91 or something different on the side of the sled?
The Better Gas Will Run Better. Like all fuel injection systems Timing Changes are made when running better gas.. elevation ..engine temp ping Knock etc...87 should be the minimal octane rating for this type of high performance engine

87 here you will loose HP running premium,Mine doesn't say 91 on the sled, and I have never saw one that does!! Are you sure you have an Apex?

sorry i guess your right i dont own an apex
why do i still have to pay those payments
hmmmmm
try reading

 

[XDooMan]

It's on a white tag , left side of the tunnel. It's the emmissions info etc.

 

[attakred06]

well with 91 i get 20mpg on a standard trail and easy start at -40

 

[SharkAttak]

well with 91 i get 20mpg on a standard trail and easy start at -40

what are you getting with 87?

 

[The Bismarck]

87 octane is all you need. Your wasting money putting in anything higher.

 

[Dany Pro]

But with a 2 deg. keyway, 91 octane is the good choice???

 

[4jwv]

87 Octane runs fine in my Attak.

 

[BigMac]

why does it say 91 or something different on the side of the sled?
The Better Gas Will Run Better. Like all fuel injection systems Timing Changes are made when running better gas.. elevation ..engine temp ping Knock etc...87 should be the minimal octane rating for this type of high performance engine

Just because a gasoline burns faster doesn't mean that it's "better".

This is a low compression engine. Slower burning is more appropriate. Just as Allen's dyno shows that a colder spark plug adds power, lower octane does the same.

There's nothing wrong with using 90+ octane, it's just a waste of money.

 

[Sled Dog]

use the fuel it was designed for 87 octane.

 

[SharkAttak]

wouldn't you lose good gas mileage with 91

 

[onlyblue]

87 all day