Miller time

iTrader: (1)

HI

Does running an 03 Sti Type UK on either of the above petrol make a difference?

Does it mess with the ECU if one minute you put in regular and the next time fill up with Super?

Thanks

SRSport

Only use 98/99 and then try using the search. There are loads and loads on this and in fact there is another thread going on along these lines somewhere at the moment. The N/A engines were mapped to 95 so they can use either but yours is fussier.

chrisdicko

iTrader: (21)

Does it not say on your filler cap 97 RON only? That's the minimum you should be using...

Miller time

iTrader: (1)

I am only asking becuase a car that I am thinking of buying the current owner says he uses both.

What is the downside of using a fuel with a lower RON? Is it irreparable?

If there are issues, how long will it take to remedy by using only Super from now on?

scooby-tc

iTrader: (2)

downside is detonation which will knacker pistons if used over a long period

f1_fan

iTrader: (9)

The way I understand it is if it's an STI of any variant it needs 98 or above (not 97).

If it's an import then it needs 98 or above.

If it's a UK car and non STI and hasn't been remapped then 95 is fine!

chrisdicko

iTrader: (21)

My UK 2003 STi has a 97 RON ONLY sticker on the filler cap....

SRSport

Thats a good point actually as thinking about it UK cars have to be able to take 95 before they are sold dont they? So wouldn't that mean that STI type UK cars can take 95 as well?

scoobydog63

iTrader: (4)

My 53plate STi has 98 RON sticker.

chrisdicko

iTrader: (21)

lol...........I'll double check mine actually then!!

I only use 99 anyway as mine has been remapped.

scoobydog63

iTrader: (4)

I use tesco 99 and would never put 95 RON in it

Miller time

iTrader: (1)

So, general consensus is use only 98 and up.

Does that mean it is being muted that a car which has been run on both during its life should be given a wide berth?

f1_fan

iTrader: (9)

If it's an STI I would walk away just in case. It''s not like there aren't plenty to choose from right now.

SRSport

Ive just been looking on google and it appears that UK cars "must be able to run on 95" doesnt include the word 'well' and as long as it goes and stops when tested thats a past, so yes, unless you want to upgrade to a new engine every 60,000 miles only use 98+.

-shane-

iTrader: (40)

My uk O3 wrx is 98ron

SRSport

Another good reason to walk away is the fact that if they are tight enough to scrimp on fuel that actually gives a performance boost what else have they scrimpt on? Services? Tesco value oil, etc.

Miller time

iTrader: (1)

Thanks again for all input.

One further point though, the guy who owns the car is just being honest about which fuel has been used.

For those that are saying steer clear, surely there is no way of knowing if other owners who have sold cars and said they only used Super are being truthful?

Wurzel

iTrader: (1)

Any UK sourced car will run on any UK sourced petrol. No car company would sell a car in a country where it can't use the petrol available in that country.

It may recommend 97 but it will run on 95 so don't let the SN scaremongerers fool you into believing your UK car will blow up if you show it some 95 NUL.

You also do not need to shell out on NF octain booster either unless you really want to waste your money, be a paranoid sheep like everyone else aswell as get yourself a lovely yellow stain on your bumper.

f1_fan

iTrader: (9)

Sorry Wurzel, but that is incorrect. The Honda S2000, for example, was sold via the UK dealer network and can ONLY run on 98 RON or above. The Honda owners manual states that and says that engine damage WILL occur if a lower grade fuel is used.

chrisdicko

iTrader: (21)

My fill cap does say 98 RON only actually! A proper Subaru sticker.

Wurzel

iTrader: (1)

So what happens when you are in the middle of donkeyfcuk nowhere and all the hick petrol stations only sell 95?? Or there is a petrol shortgae of 98+

Bit of a stupid thing to do wouldn't you say?

Carlh

Im sure its ok for the occasional fill up as you say "stuck in the middle of nowhere" and it would be ok, but to do it <all> the time might not be a good idea, especially if you're out to keep the car for many years, if you think you'll sell the thing in 12 months, then it becomes someone elses problem.

You wouldnt put your shopping in a crap carrier bag would you? Put whatever the label on your cap says, if the manufacturer recommends it, its for a reason

f1_fan

iTrader: (9)

Never had a problem when I had mine, but I see your point.

I was just illustrating the point that UK cars are sold in that state of tune.

GREGGYG

iTrader: (2)

Oh dear, not this stupid topic again. Forget what the current owner says, and concentrate solely on what the people who designed the engine say, (the manufacturers). That is SUPER UNLEADED fuel for an 03 sti. End of.

Greg

Miller time

iTrader: (1)

Point taken and I would only use Super.

So if I understand correctly, from a purchasing point of view, I should steer clear even though the car has covered 15k miles in eight years?

GREGGYG

iTrader: (2)

It means that the person who has run it on both fuels is a penny-pincher, and i would consider what else they have cut corners on. Anyway, all specialist car owners should have an owners handbook where all the necessary info can be found!

JohnD

iTrader: (5)

It's perfectly fine to use 95 if you get caught short. Even well modified and mapped engines will be ok The simple rule is - DON'T USE BOOST! or at least a minimal amount. Another sensible thing is to carry a bottle of NF or similar.

JohnD

Gambit

iTrader: (6)

plenty of S2000's running about Northern Ireland without any engine trouble, and you can only get 97RON SUL here

f1_fan

iTrader: (9)

Well give Honda a call. I owned one for 2 years and that is what the dealer said and the handbook said and what makes sense when the car is pulling 38hp more out of the engine than the same engine in the CTR.

specialx

END OF!


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