minimum octane

[jabberwalk]

I searched but did not find any answers. I am driving to homecoming and want to know if I can run 89 octane on the highway rather than 91. I will fill up with 91 before playing, but if I am driving 70-75 for 8 hours- any harm? My motor is stock with a pitbull chip and ATR intake only.

 

[SY2455]

Re: minimum octane

This may sound dumb, but the truck was built for 91Octane min. So why take the chance?

 

[gjp]

Re: minimum octane

This may sound dumb, but the truck was built for 91Octane min. So why take the chance?

x2
whats 2$ more per tank? Heck its going to cost me 60$ to fill my sy.

 

[SY2932]

Re: minimum octane

Sure you can. If you have A LOT of self control and can STAY OUT OF BOOST. Romp on it getting on the highway or racing another driver who feels froggy you risk detonation. These motors won't tolerate much of it before they put the connectiong rods out the oilpan in protest... Personally, I say spend the extra $ and use the high octane "just in case".

 

[Captain Morgan]

Re: minimum octane

ive been running 87 octane for 2 years

(shhhhh, dont tell anyone) :ninja:

 

[willyson]

Re: minimum octane

how are you going to know if the gas station even puts high octane in the tank at the gas station? its kind of a toss up on the grade of gas. not everyone plays by the rules.

 

[dgoodhue]

Re: minimum octane

One thing to remember is that your subsequent tank full after running lower octane will be diluted octance wise unless you run the tank really low.

 

[Flyin Ryan]

Re: minimum octane

how are you going to know if the gas station even puts high octane in the tank at the gas station? its kind of a toss up on the grade of gas. not everyone plays by the rules.

I've found out many times that Shell gas stations in my area blow and can't hold a candle to exxon or sunoco gas for some reason.. me thinks this is the reason why!

I also would opt to spend the extra cash on using at the very minimum 91 if you have to if not higher when you can even though the pitbull chip is a more richer chip it's not worth the risk in my opinion

 

[mattw]

Re: minimum octane

Ideally you would burn(or have someone burn you) a chip with a very mild timing curve and low(~5lbs) max boost. You could run 87 all day long like that.


-Matt