Optimax
#2
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It should be OK on Optimax. Some will suggest that octane booster should be used too but I've run several imports on Optimax alone without any problems. Don't use normal 95 RON unleaded though.
#5
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If it's a classic (old shape pre 00) WRX then it is a Jap import and may not have been remapped for our 95-98 RON fuel as Japs get 100RON. Until you know it would be safer to run steady on Optimax or use booster if you drive aggressively. If it hasn't been remapped for UK fuel then you've just found out about your 1st mod If however it's a newage car (00 on, bugeye/blobeye/hawkeye) then it's OK on 95RON if it's standard or any SUL 97RON and above if PPP'd or modified in any other way.
#7
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Originally Posted by John Goldick
Also use Tesco Super Unleaded 99 Ron petrol!!!
Thanks PPl
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