99 Ron

[Peppermuncher]

Well! I've taken my first step into the world of high octane fuel. Ran the tank till pretty much empty today, filled up with £35 of tesco 99 ron. I put this amount in every 2 weeks, should I be seeing something in a month or so. I know its not going to be like re-map but will there be something?

[Black9]

U go through £35 fuel every 2 weeks? Lucky u! Yea I find high octane makes a differnce. Engine runs smoother, pulls harder to red line and returns better mpg. I've always used high octane on all my cars. Made a move from shell vpower to tesco 99 & haven't looked back:)

[Tamiyoman]

Well! I've taken my first step into the world of high octane fuel. Ran the tank till pretty much empty today, filled up with £35 of tesco 99 ron. I put this amount in every 2 weeks, should I be seeing something in a month or so. I know its not going to be like re-map but will there be something?

Filled up with £35 of Momentum 99 ?????  , are you running a Moped??  , whenever I fill up the ED30 with Momentum it costs me £75 (altho that is only once every 3 weeks)

 

[DanGB]

I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.

[sub39h]

I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.

You'd think so, but even on my 1.6 I noticed a distinct difference in torque and therefore i needed less throttle so the mpg went up. One time I went on holiday and left that car with my parents. When I came back I swore it wasn't running right. I then clocked on it was because they would have put regular fuel in it. I put in some V-Power and all was well again.

I've never run my 2.0T on anything other than V-Power or Momentum which I use interchangeably (apart from the odd fill of another brand's high RON stuff when I was caught short once). There's a reason VW and tuners recommend the engine is run on it!

[GrayMK5GTI]

I dont think you'll really notie a difference if the car is standard. Placebo in my opinion.

I used to run 95RON for about a year before I switched to 99RON. Ive switched back in the past a couple of times and the difference is quite obvious. The 95RON feels very "Flat" - especially at the top of the rev range. Throttle response is much better on the 99 too 

On N/A engines like the Civic Type-R it makes no difference to use 99RON, however every turbo car i've owned it makes a huge difference. The recent Fifth Gear fuel test proved that on a turbo car a few BHP gains are to be had 

[Nodz]

The first time at JKM I was running v power 99 and someone else was running normal 95 and there was a 3bhp difference. That could've come from anything saying that but both cars were standard ad the only difference was fuel iirc

[Andy_Ed30]

I have run both 95 and v power in my golf when it was standered.

I could feel a small difference in performance and mpg difference of about 2 or 3.

Now mine is mapped I don't bother with anything other than vpower.

[George]

No GTI should be run on anything less than 97Ron, it even states this inside your fuel cap (it might even say 98Ron!)

Something to do with the FSI I think

[Andy_Ed30]

No GTI should be run on anything less than 97Ron, it even states this inside your fuel cap (it might even say 98Ron!)

Something to do with the FSI I think

You can run 95 but its states 98 is preferred.   

[Duke]

You won't notice the difference in power, but the engine should run smoother and will help to keep it clean inside. I always run mine on Tesco 99 although I think VPower would be better still (no stations particularly local here unfortunately).

[homesqueeze]

It's not advisable to use 95 ron all the time. There have been many reports of head gasket problems on cars that use 95 long term. Like George said, the fuel flap says to use 97 or higher. That's for a reason obviously.

[Andy_Ed30]

It's not advisable to use 95 ron all the time. There have been many reports of head gasket problems on cars that use 95 long term. Like George said, the fuel flap says to use 97 or higher. That's for a reason obviously.

Mine has 95 in small text and 98 in large text.

[scottm72]

on a stock gti would you think the disadvantage of the higher price 98 ron in terms of cost compared to the extra although little mpg balances itself out ?
i have only just got my car but been using normal unleaded, i never put my car anywhere near the red line so do you still think it is adventegeous to use the higher ron still,,, does it really make the engine run smoother ?, all my petrol cap says is minimum 95 ron ?
will quite happilly step up to v power etc but would like someones views on this
ps, filled my car twice since i got it, full to orange light on first tank = 300 miles, 2nd tank = 325 on 95 ron carefullish driving, will go for 350 next time lol

[Peppermuncher]

I only do about 7k miles a year hence the small amount of petrol used. My main thoughts were about a tiny amount of extra umph! Not that it'll be noticed
The benefits of being kinder and cleaning the engine combined with the slight increase of mpg. Even if it only adds 3mpg then that's about 8% more efficiency with only an extra 4% outlay.