I think you mean "pre-ignition." I was talking about detonation. They are two different things. It is true that the ability to resist pre-ignition correlates to octane rating, but the octane rating is directly tied to activation energy.

 

I Live in FL, and the highest ocane we get here is like 93... I used 91 and then 93 and I noticed a large jump in performance...
I think in some states 94 ocatane can be pumped at Sunoco

 

I use 98 octane which is easily bought in the UK (better than your crap lol) its not worth the extra unless your racing

 

dude,ignition and detonation are the same thing,check a dictionary,wow,this is amazing.

 

here's to clear up other statements.the fuel that is recommended for my car,in the owners manual,is premium unleaded with an octane rating of 95 ron or higher.it also says do not use a fuel with octane rating lower than 91 ron

 

sorry for multi post.it also says with using minimum 91 ron "this may lead to a slight loss of engine power".again the post with the american v8 test of octane boost is not really relevant to our fine crafted german engines.the closer we can get to that 95 ron goal the better even if it is .7

 

Here is a quote off Engine Basics: "Sometimes you hear mistaken terms like "pre-detonation". Detonation is one phenomenon that is abnormal combustion. Pre-ignition is another phenomenon that is abnormal combustion. The two, as we will talk about, are somewhat related but are two distinctly different phenomenon and can induce distinctly different failure modes."

Or, check out the link: Engine Basics

Or, if you still don't believe me, check out the more-authoritative Wikipedia, which also spells out the difference between detonation and pre-ignition: Engine Knocking

And finally, Octane Rating


I'm still learning, but I'm not going to be mistakenly insulted.

 

Yep Ohio is one of those states. I use 94 every fillup.

 

Do you feel any power loss using it? It's hard to tell if it's my imagination, but I feel like I get slightly less power but a smoother idle. It could just be the placebo effect though.

 

yes it does perform better (at a cost) and the cost can be your engine or at least its life but no real harm as long as you dont use it too much (REDX used too much burns the valves out)