What's the highest octane I can put in my Z?

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05-08-2004, 10:38 PM

#16

Terran2k

Registered User

Join Date: Aug 2002

Location: texas

Posts: 986

I usually run 93 octane, i've put in sunoco 94 before but didnt see any real difference. so i just use 93.

05-09-2004, 02:01 PM

#17

CamaroUK

Registered User

Join Date: Feb 2004

Location: London, England

Posts: 174

The pump gas over here is always 95 octane, I have no frame of reference when it comes to peformance gains over lower octane gas. But to answer the question, I have never experienced any running problems with my old third gen nor my current Z on 95 octane.

05-10-2004, 12:23 AM

#18

Injuneer

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Join Date: Nov 1998

Location: Hell was full so they sent me to NJ

Posts: 70,650

The "octane" posted on the pumps in Europe is a different basis than used in the US. I know the US uses the average of "Research" + "Motor" octane: (R+M)/2, while I believe Europe posts the "Research" number, which is generally the higher of the two. Research octane is a good general indicator of suitability for moderate street use. Motor octane is a better indicator of suitability for max load/max performance use.