jamiec

Hello everyone

Im wonderin if anyone can tell me if you have to run a standard 2000 subaru impreza on super unleaded (99). Ive been told it could end blowing piston 4 if I use just normal unleaded, Is this true?

Many Thanks

Tidgy

super yes (but sauper is 97ron), but personaly i wouldn't run it on anything other than optimax or tesco 99

myblackwrx

iTrader: (1)

UK spec cars are designed to run on 95 RON but to get the most out of it then 97+ is better (as Tidgy said and also Prodrive i think recommended it)

Also whoever told you about no 4 piston is stupid imo as the commonest problem is no 3 piston (as it's closest to the turbo and gets a little hotter) but that only happens if you treat the car like crap and decide to do high speed runs all the time.

jamiec

Cheerz for your speedy responses & advice!!

Least I know the truth now

Many Thanks

Jamie.c

masterbates1

V power all the way

hixxys STI

i have an import so is V-POWER ok to use then

myblackwrx

iTrader: (1)

V power or Tescos 99 are perfectly fine.

hixxys STI

thx for that cuz sunday i put unleaded excellence in my tank due garage having no v-power and it feels like a pig

T1000

I found my MY99 hated 95 Ron the first day I bought it. My knock sensor flickered like a christmas tree. I now use 99 ron only and it's fine (it is on an APEXI ecu though)

myblackwrx

iTrader: (1)

97RON should be the minimum for imprezas really but don't use 95 especially in an STI.

hixxys STI

i have noticed it to be a bit slugish, but will it be fine now that i have filled it up with v-power, i had a quater of a tank left b4 filling

Mrchips

iTrader: (7)

I have been told that the ECU learns quickly, so yeah it will be fine.

hixxys STI

great stuff cheers for the info

myblackwrx

iTrader: (1)

to reset the ecu manually have a look here www.jollygreenmonster.co.uk

turboturner

iTrader: (6)

Just been for a holiday driving through Europe and they get V-Power 100
The UK Im sure will follow suit at some point

Wenker Man

I've always run my 1998 UK model Impreza on 95Ron fuel. Its done 92,000 miles now

Imports from Japan I hear is an issue, as they do require higher octane fuel, which I think often gets mistaken as being true for the UK market cars when it isn't always the case.

Steviem

Yea, Japan's fuel is at 99-102RON so any scoob imported to this country from there has to run on as close as poss. In are case in the UK - 99 Ron seems to be the highest. I was advised running Octane Boost for best performance

myblackwrx

iTrader: (1)

Early imprezas didn't run on 100RON and adding octane booster is a waste o f time,imo, unless you can't get 97+RON.