I'm intersted to know whether most N/A guys use 91 RON or 95 RON petrol in their tank.

I've owned my XR6 for about 6 months (brought it second hand) and always used 91, but the km's I get per tank are pretty . Performance is about what I expect for a stock XR6....

I'm now wondering if switching to 95RON would see any noticeable difference in km's per tanks and/or performance.....

I drove around for 3 years using 91 octane, I did put a tank of 95 and 98 in it once, did absoulely nothing, if your car isnt tuned for higher octane fuels you wont get a gain at all.

I noticed that you bought a 02 sensor from ebay too, have you put that on?

I drove around for 3 years using 91 octane, I did put a tank of 95 and 98 in it once, did absoulely nothing, if your car isnt tuned for higher octane fuels you wont get a gain at all.

I noticed that you bought a 02 sensor from ebay too, have you put that on?

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Can't agree there. You need to run a few tanks of 95 or 98 through to really see the benefits.

I ran my AUII XR6 on 98 most of the time, but if I ran 91 the fuel economy would drop by 50-60ks per tank.

I have had similar results in most of my cars. Regardless of how the car is tuned, higher octane means a more efficient burn and less fuel is needed to get the same results as a lower octane fuel.

Premium fuels are generally cleaner and the cleaner burn means less engine deposits and fewer injector cleans.

98 in mine when it was a na

Stock, 2/3 tanks 95 RON to 1 tank of BPU.

Once modded...BPU all the way In the NA when I had it & in the T: AZUL.

"Optiping" was too unpredictable, run like a bat out of hell one week, ping it's crapper awf the next week.

I drove around for 3 years using 91 octane, I did put a tank of 95 and 98 in it once, did absoulely nothing, if your car isnt tuned for higher octane fuels you wont get a gain at all.

I noticed that you bought a 02 sensor from ebay too, have you put that on?

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Yeah, threw the O2 sensor in last week but have barely driven the car since, so I can't say I've noticed a change as yet. I filled up today, and reset the trip computer so should know by the end of the week is the new sensor helped. I'm still driving like a grandma though... THough that I may try 95 RON and see I can get a few more km's out of the tank.

I would never even consider putting anything less than 98 in any car I paid more than 5000 dollars for.. It will take a few weeks to retune to the better fuel but they run better, cooler, less wear and better fuel economy on the higher octane fuel.....

I have never used anything below 98 octane for years now.

Don't forget this thread is in the NA sub-forum ladies.

Dont care.. I use 98 in my 3 litre 4wd also..

I also use it in the bike, the boat and the old massey fergusen tractor....