mk 5 golf or face lift leon

catoutthebag

Leaning towards a Leon in future or 56 civic.

But are fsi mk5 golf's bad...heard that if they've not had high octane fuel from the start they !!!! up?

Stoke

catoutthebag wrote: »

Leaning towards a Leon in future or 56 civic.

But are fsi mk5 golf's bad...heard that if they've not had high octane fuel from the start they !!!! up?

Heard from who? Sounds like !!!!!!!! to me.

DUTR

catoutthebag wrote: »

Leaning towards a Leon in future or 56 civic.

But are fsi mk5 golf's bad...heard that if they've not had high octane fuel from the start they !!!! up?

As per post #2, the only ones that would run on high octane are the R, R32 and possibly GTI, the FSI require low sulphur fuel that is probably where your mate down the pub got confused.

catoutthebag

Stoke wrote: »

Heard from who? Sounds like !!!!!!!! to me.

Honest John

So think befure typing

agrinnall

catoutthebag wrote: »

Honest John

So think befure typing

Give us a link to the relevant article or you're the one who needs to do some thinking - and a bit of politeness wouldn't hurt.

Stoke

agrinnall wrote: »

Give us a link to the relevant article or you're the one who needs to do some thinking - and a bit of politeness wouldn't hurt.

Honest John.... isn't always honest.

catoutthebag

Alright sorry.

I can't remember if the octane was the wrong word.

But if you're not using the expensive petrol on FSI petrol mk5 golf's they mess up.

It's a renowned problem and not just on honest John. Google it it's all there. So I take it you've both owned this car second hand and not had issue right?

DUTR

catoutthebag wrote: »

Alright sorry.

I can't remember if the octane was the wrong word.

But if you're not using the expensive petrol on FSI petrol mk5 golf's they mess up.

It's a renowned problem and not just on honest John. Google it it's all there. So I take it you've both owned this car second hand and not had issue right?

I had a MK5 Golf GTI from new and kept it for 72K miles and 8.5 years, gave it a diet of super unleaded, and the car ran sweet for me during that time, only changed car as I fancied a MK7 GTI , the only note I remember from the MK5 handbook is that the fuel should be low sulphur for FSI engines, others I know with the similar model had no reported problems, the only place I have recalled any problems is here by you

catoutthebag

DUTR wrote: »

I had a MK5 Golf GTI from new and kept it for 72K miles and 8.5 years, gave it a diet of super unleaded, and the car ran sweet for me during that time, only changed car as I fancied a MK7 GTI , the only note I remember from the MK5 handbook is that the fuel should be low sulphur for FSI engines, others I know with the similar model had no reported problems, the only place I have recalled any problems is here by you

Well everyday is a school day


http://www.a2oc.net/forum/showthread.php?11822-fsi-owners-super-unleaded-do-you

http://uk-mkivs.net/topic/10253-super-unleaded-vs-normal-unleaded/

http://www.honestjohn.co.uk/forum/post/?t=77564

http://www.bba-reman.com/forums/Topic108210.aspx

http://www.volkswagenforum.co.uk/showthread.php?t=11050

Etc

I can ask again : do any of YOU have experience as a fsi owner because if you don't use super unleaded there is a high chance of various problem?

catoutthebag

Stoke wrote: »

Honest John.... isn't always honest.

Like mse forum then

Strider590

Having searched this FSI fuel octane thing, most people are talking utter sh*te.
All this nonsense seems to have spread as rumour starting with someone noticing that VW recommend 98 octane fuel (most car manufacturers do for most cars).

Fuel octane has NOTHING to do with power. The calorific value (energy) of high octane fuel is no different. High octane fuel just burns in a more controlled manner under higher compression.

There are two ways that normal unleaded could cause damage:

1) Normal unleaded contains bio-ethanol (by EU law), bio-ethanol can damage and increase wear on fuel systems.

2) If the cars ECU doesn't adjust the ignition timing to compensate for fuel octane (should be automatic), then detonation will occur and this will destroy the pistons.


In a highly tuned engine, high octane fuel will allow the engine to run at optimum ignition timings, this will let the engine produce maximum power.
In older vehicles (like my kitcar) with a mechanically locked ignition advance, you have to stick to the same fuel it was built for.

The fact your looking at Golfs indicates you rely too much on cr4p spouted by Dave down the pub.