What an insightful, informative and thought-provoking post from someone who is appointed a moderator. I am glad moderators are looking in this thread to help moderate trollish behavior.

It's amazing how many people on this forum are more qualified and knowledgable than Porsche engineers and researchers. Quite a talented crowd.

 

I'm not sure if you'd say the same if you dyno'd it - it is supposed to lose some power but I'm not sure if it would be noticably perceivable.

And I think any damage occuring from the 87 would be long-term.

 

When it says "Premium Unleaded Fuel Only" on the inside of the fuel door, and you ask "does it have to have it" on an internet forum don't expect respect.

 

Look in your manual. It uses the word "recommended." "Only" unleaded fuel, and among unleaded fuel, 91 or higher octane is "recommended."

You didn't mention anything about courtesy or friendliness - what are the stringent requirements that someone has to meet for you to give either of those?

 

You are missing the point, so just move on please.

 

Funny, that's exactly what I was going to say to you - as you apparently have nothing informative or rational to contribute.

From you we have information about how premium gas costs you more money than regular gas, whereas I've provided link after link of information about the issue. I wonder who's contributed more information on the "point."

Does it really hurt to be courteous and friendly? How much better would this community be if we treated each other with a modicum of respect, regardless of whether we think their questions are "dumb"?

 

we learned this in class the other day, and that octane rating is just the fuels ability to resist knock.. and naturally the higher the compresion ratio, the higher the octane rating needed. NEVER put in a lower octane then the minimum requirement

High octane fuel actually burns slower and cooler than low octane, and when you have such high compression and such a small combustion chamber to work with... if you put in the cheap gas, its going to burn to fast and not in a smooth manner. you will have detonation, which can really hurt something after a prolonged occurance.

like everyone has said, usaully the different grades in gas are 10 cents higher then the previous... tell me if 20 -30 cents extra is going to make you broke! s2000 engines ar not very cheep to replace over a few dollars of a mistake!

 

Correct me if i'm wrong, for all the people suggesting "get a Civic if you can't afford 91 octane", well, doesn't Honda suggest using 91 octane on Civics too?

 

Exactly, running a few tanks of 87 isn't going to hurt a car really. There has been some technical info on what the engine does when it gets pre-ignition in here already.. we are just beating a dead horse at this point.

Yes, engineers design it to run with lower octane, that's why the knock sensor exists.

Haven't said that, in the long term, a lot of pre-ignition/detonation can be a bad thing.

 

Actually he's not. "Premium Unleaded Fuel Only" refers to exactly what he said.

If you want to come up with a real arguement, feel free, but don't just post crap to get the last word in.