[Z06] What octane level?
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 1,240
Likes: 2
From: Cedar Rapids Iowa
What octane level?
My 2002 knocks slightly under WOT using 91 octane gas. What octane level is needed to completely stop the knocking? I have found a station that sells 92 octane but I have not tried it yet.
Instructor
Joined: Aug 2004
Posts: 128
Likes: 0
Originally Posted by 9899Z06
u'll need atleast 93 octane.
if u search for racing fuels u can see some good products which can raise ur octane (like torco racing fuel)
if u search for racing fuels u can see some good products which can raise ur octane (like torco racing fuel)
many parts of the country do not sell above 91.
your owners manual clearly states that 91 and above is recommended for best performance and 87 can cause knocking.
your engine adjusts the timing if you have **** gas so maybe you have another problem.
as a doctor would say: "run some new fuel through there from a differnt mfg and call us next week".
Burning Brakes
Joined: Apr 2001
Posts: 1,055
Likes: 0
From: Simi Valley CA
Originally Posted by Shylor
The car shouldn't knock with 91 octane. The knock sensors should adjust the timing for the octane fuel used. Something else may be wrong.
