Which octane level

Which octane level should I use for my 2000 gsr? I use 89 now but i read up on a site that said gsr's should run 91? Is it okay to run 89 or should i always run 91?

 

Yea you can use 89.

 

if its not pinging then you are fine

if you will be doing a lot of hard driving i would go with the higher octane just for the added insurance though

 

93

 

At least 91. You can't find 93 everywhere.

 

yeah, at least 91. gsr's run like shit on 89.

 

i kinda mislead him. I don't have a GSR, so I can't tell for sure, but if E and NoJoke say you can use 89 (and not ping) then you can use 89.

What I was saying was if you do use 93 like Milan says, then 91 would be safe as it's in the same group of premium as 93 since a lot of stations won't have more than 91 octane.

On a just thought up question...how do you figure out octane ratings? r+m/2 is the formula...but what does it mean?

 

i DO NOT know if it is safe to run 89 in a GSR... all i was saying is if it doesnt ping i GUESS hes ok

 

What about a b18c5? 93? Will running racing fuel (100 - 110 oct.) damage anything?

 

as long as it doesnt ping run the cheapest gas you can why pay more if you not using it to the full potental!

 

as long as its not leaded no.

 

i run 93 on the street in my ITR engine

i run unleaded 100 octane when im at the track though

when racing balls out for 25-35 min its a little added insurance :shrug:

 

How do i know if its pinging or not? Is it a loud sound or what?

 

go with 91

it will cost you what $1 per tank over running 89?????


fuck it its a dollar