Fueling your mk2

[tony_ack]

A quick update on my above post, I decided to try the expensive BP stuff and to be honest I couldnt tell ANY difference to the standard Morrisons goop Ive been using for ages - however I put £15 worth of Tesco Super Unleaded in tonight (first time ive tried it) after it was nearly on empty and there is a HUGE difference, feels like a different car - much smoother and more responsive!

I was always told that you don't usually see any benefit until your second tank, as the first tank mixes with the leftovers from the previous tank. Obviously running it as dry as you can before fill-up can help.

Re. the whole debate of 95v98, I think a telling sign is the Golf owner manual. Pg. 75 lists the MINIMUM RON fuel to be used for each engine. Most carb engines are listed as 91. Most fuel injection engines (including the GTI 16v) are listed as 95 (though it recommends 98 'for prolonged high speed driving at ambient temperatures). However, the 8v GTI is listed as 98, with the proviso that 95 can be used, but it will lead 'to a slight loss of power'.

[neils]

ok didn't mean to poat in this thread wtf???

ello btw new here!

[Martz]

ok didn't mean to poat in this thread wtf???

ello btw new here!

Very random but funny too!

With my old 16v it used to pink like mad with Tesco, cheap fuels. SUper Unleaded Optimax was always a good fix for it.

[MarkS]

Shell all the way for me too.

Oddly, I filled up with BP Ultimate the other day as there wasn't a Shell around.

It's 'only' 97 ron so with half a tank of that and half a tank of Shell I would have been running 97.5 ron compared to usually a full tank of 98 ron fuel and got a better fuel economy 

[kittie]

It makes sod all difference and this has been covered loads of times.

[Ben Lessani]

It makes sod all difference and this has been covered loads of times.

I didn't want to sub to this thread but Kittie - it makes a massive difference. You're on here often enough, I would have thought you'd know the impact of using 95 fuel on a 97 tuned engine.

Crappy marketing aside, it probably won't give you better fuel economy or clean the engine the way they describe. But what it will prevent is detonation and your pistons looking like this ...



Every time this topic is covered, its always stated that you should be using the right fuel in the right engine, maybe you should re-read

http://en.wikipedia.org/wiki/Octane_rating

[6foot6]

if you manage to do that to NA Engine somthing is very very wrong with your EFI map tune/ timing way out or your compression is way to high. the chance of doing on that on stock engine running 95 rod is remote

on a high boost turbo car I have seen that many times with a bad tune, but never on a low power Golf 1.8, if you run a digi golf, it will have a knock sensor and unless it has any knock (frequency worked out from bore and stroke of the engine in KHZ) you wont even notice a drop in performance.

My MR2 Turbo is designed to run on 100Ron Jap fuel and with my Blitz ECU its chucks on even more advance and leans out the mix for more power and I chuck in super only, and tesco 99 is the best I have found and have checked this with a timing gun on the rollers - runs way more advance with the Tesco stuff and power than normal Super UL.

The old Mechanical Fuel Injection Golfs Early 8v and 16vs will be more prone to using the correct fuel as they are dumb fuel systems.

 

[Mk2George]

Well I dont know if its just coincidence but now my car is stalling every time I come to a junction - revs drop below 500 then it cuts out. Well annoying!!!

It never used to do this on the old fuel ....

[DarnPB]

It makes sod all difference and this has been covered loads of times.

Yes and no. No it does not make a difference on low powered and low compression ratio engines, but yes it does at the other end of the scale.
And yes, this topic has been covered many, many, many times before, but it seems that people are reluctant to be educated and rely on pub talk rather than the trained and taught facts that only one or two of us, so it seems, have been privilaged with. These threads are now extremely boring!

[sidecarphil]

but pub facts are real !!!!

my pi55ed mate told me !!!!!