Ok is it bad to switch back and forth from 87 to 89 or 89 to 87 will it hurt the engine thx?

 

no it shouldnt...

 

should be just fine

 

Should be fine...if your engine starts knocking while it has one of them in there then you might want to stick with the other...

 

I use 94 octane when I go up to the Poconos. You can tell the difference with that vs 93.

 

If the owner's manual specifies a minimum of 87 octane, don't waste your money on anything higher.

Octane is a rating of resistance to ignition. Engines running higher compression require a higher octane. Read about it:
http://auto.howstuffworks.com/question90.htm

 

unless you have turbo, nitrous, or supercharger
damn it is almost 2/gl here for 93...really startin to piss me off!
but if you are n/a then 87 in your honda is fine!

 

thx for the reply ppl

 

This is true....however I tried an experiment last sunday when I moved down to San Diego. I had all sorts of stuff in my car, so the back of my car was sagging. I put a tank of 92 octane fuel in my car, to see if it would make a difference climbing that huge grade before you descend into LA. The car had no trouble getting up that grade, despite it was a good 500 pounds heavier. That would be my only reason for putting anything higher than 87. Anything else is useless otherwise.

 

i thought 5th and 6thG accords lose power from higher octane?