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Here in the uk you can only get 95 ron and above.. i use 99 ron and i can tell the difference, throttle response, MPG and overall performance are all increased...
in the European Mr2 manuals it even says the engine was designed to run on 98 ron and above...
and as for it being a needless expense, higher octane fuels have less detergents in them, they are normally formulated for high performance engines and money for miles perform on a par with lower octanes as you get an increased MPG...
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