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I recently got a new car after the old Ipsum I have got into an accident. It has serve me well and even after the the accident it has been very reliable in providing me trip from Mt Wellington to Takapuna almost every working day with quite good mileage using fuel 91. But recently I got myself into the new car Toyota Wish which I got to get use to two things that is the leg parking break instead of hand break and then the cost of using fuel 95 as oppose to 91 which the car dealer recommend. I was wondering is it true that by using 91 my new Toyota Wish engine might be less reliable and that it will perform less better then using 95. I found so costly to use 95 and the difference even near by from one pump to the other is about 9 cents from 91 to 95 and then you got Caltex charging up to 26 cents different. Like in Sylvia park Caltex 91 is 1.73 and 95 is 1.99 and then Z is 91 is 1.73 and 95 is 1.82. So much different and cost more for 95. I try using my fuel saver but since I started using 95 my pocket is so much costly to run.

Hi there,
I'm unable to fins fuel specs for this vehicles specifically. However most modern non-turbo vehicles can run on 91 octane fuel. If the vehicle "pinks" or is noticeably low on power, then switch back to 95.