What RON fuel to use

advinnie · 24th January 2013, 19:35

Hi all can anyone tell me is it worth using 99 RON fuel in my mg zt V6 160 or stick to the normal 95 RON unleaded and why cheers all

carguy143 · 24th January 2013, 19:44

I've used 99 RON in my 190 for most of the time I've had it. Apparently it doesn't have any bio mixture like regular fuels. It certainly stinks enough on a cold start!

advinnie · 24th January 2013, 21:19

What 99 ron do you use tescos 99 or shell v power? And do you notice any difference compared to normal 95 unleaded

MangoMan · 24th January 2013, 21:30

I use Momentum..... Have done for years, in all my cars.

advinnie · 24th January 2013, 21:40

But can the mg V6 engine adjust its timing to cope with the higher ron fuel and what benefits will I see over regular 95 unleaded

438brad · 24th January 2013, 21:42

I personally don't think it's worth using super unleaded in a standard normally aspirated car. My Turbo charged Holden has been tuned to only run on super unleaded however to avoid 'pinking'. It has been proven that you will get a slight power increase with super unleaded by several magazines and, I think, 5th gear tv program but this was with turbocharged cars. As I remember it, I think the gains were negligible with a normally aspirated motor. I also think the mpg is not improved as claimed as I tend to like to use any power gains that I can get

although higher octane fuels do burn more efficiently.

carguy143 · 24th January 2013, 21:54

I normally used Tesco 99 but I don't use them any more for personal reasons so now it's Saintsbury's super or Shell if reasonably priced. One garage near me charges over £1.55 for it!

rovexCDTi · 25th January 2013, 06:18

Unless your car has a knock sensor using higher octane fuel isnt going to do much for you. Even then many systems dont actual make use of it to generate more power or increase economy.

The fuel may however be better quality with more additives, but thats debatable.

Canonite · 25th January 2013, 07:47

I do agree to some length that its generally not really worth doing on a N/A car, but I do think that with these V6s it is. Mine certainly feels a lot more lively running 97/99. If I have to fill up with 95Ron it's as if my handbrake is binding or VIS motor has packed up.
I do think though, that to notice any difference in performance the car needs to be in tip top shape mechanically. For example, a dodgy VIS, exhaust leaks or misbehaving manifold certainly wont help matters.

I didnt do any performance upgrades on my 160 until i'd had full service, changed oil, spark plugs etc

24th January 2013, 19:35	#1
advinnie Avid contributor mg zt 160 Join Date: May 2011 Location: WALLINGFORD Posts: 200 Thanks: 1 Thanked 0 Times in 0 Posts	What RON fuel to use Hi all can anyone tell me is it worth using 99 RON fuel in my mg zt V6 160 or stick to the normal 95 RON unleaded and why cheers all

24th January 2013, 19:44	#2
carguy143 This is my second home MG ZT 190+ Join Date: Jul 2011 Location: Skelmersdale, Lancs Posts: 3,027 Thanks: 163 Thanked 161 Times in 122 Posts	I've used 99 RON in my 190 for most of the time I've had it. Apparently it doesn't have any bio mixture like regular fuels. It certainly stinks enough on a cold start! __________________ "You don't park a ZT, you simply allow it to rest until next time." It may not happen very often but if I say something helpful please hit the "thanks" button as it helps other users. Thank you. No. 16 of only 52 Nocturne Blue 75/ZT ever produced. ONLY TEN of these were ZT 190+ http://badges.fuelly.com/images/sig-uk/263467.png

24th January 2013, 21:30	#4
MangoMan This is my second home Looking.... Join Date: Oct 2010 Location: England Posts: 10,911 Thanks: 862 Thanked 1,111 Times in 868 Posts	I use Momentum..... Have done for years, in all my cars. __________________ *Regards, Bill - (MangoMan).* (Member 00854) http://i1110.photobucket.com/albums/...d.jpg~original

24th January 2013, 21:42	#6
438brad Gets stuck in MG ZT-T 260 SE (#491) Join Date: Mar 2010 Location: Rossendale Posts: 753 Thanks: 94 Thanked 23 Times in 22 Posts	I personally don't think it's worth using super unleaded in a standard normally aspirated car. My Turbo charged Holden has been tuned to only run on super unleaded however to avoid 'pinking'. It has been proven that you will get a slight power increase with super unleaded by several magazines and, I think, 5th gear tv program but this was with turbocharged cars. As I remember it, I think the gains were negligible with a normally aspirated motor. I also think the mpg is not improved as claimed as I tend to like to use any power gains that I can get although higher octane fuels do burn more efficiently. __________________ [SIGPIC][/SIGPIC] My other toys! Holden HSV GTS 5.7 V8. Turboed and Nos '98 Honda Fireblade Mercedes Vito Never mind the power, feel the torque!

24th January 2013, 21:54	#7
carguy143 This is my second home MG ZT 190+ Join Date: Jul 2011 Location: Skelmersdale, Lancs Posts: 3,027 Thanks: 163 Thanked 161 Times in 122 Posts	I normally used Tesco 99 but I don't use them any more for personal reasons so now it's Saintsbury's super or Shell if reasonably priced. One garage near me charges over £1.55 for it! __________________ "You don't park a ZT, you simply allow it to rest until next time." It may not happen very often but if I say something helpful please hit the "thanks" button as it helps other users. Thank you. No. 16 of only 52 Nocturne Blue 75/ZT ever produced. ONLY TEN of these were ZT 190+ http://badges.fuelly.com/images/sig-uk/263467.png

24th January 2013, 21:19	#3
advinnie Avid contributor mg zt 160 Join Date: May 2011 Location: WALLINGFORD Posts: 200 Thanks: 1 Thanked 0 Times in 0 Posts	What 99 ron do you use tescos 99 or shell v power? And do you notice any difference compared to normal 95 unleaded

24th January 2013, 21:40	#5
advinnie Avid contributor mg zt 160 Join Date: May 2011 Location: WALLINGFORD Posts: 200 Thanks: 1 Thanked 0 Times in 0 Posts	But can the mg V6 engine adjust its timing to cope with the higher ron fuel and what benefits will I see over regular 95 unleaded

25th January 2013, 06:18	#8
rovexCDTi This is my second home MG ZT+ 135 Join Date: Jan 2011 Location: Exeter Posts: 3,626 Thanks: 9 Thanked 42 Times in 26 Posts	Unless your car has a knock sensor using higher octane fuel isnt going to do much for you. Even then many systems dont actual make use of it to generate more power or increase economy. The fuel may however be better quality with more additives, but thats debatable. __________________ [SIGPIC][/SIGPIC]

25th January 2013, 07:47	#9
Canonite This is my second home BMW 330d Tourer, MG ZT 180 SE XPG, VW Polo 6R 1.2 TDI Bluemotion Join Date: Jul 2011 Location: York Posts: 6,029 Thanks: 363 Thanked 574 Times in 319 Posts	I do agree to some length that its generally not really worth doing on a N/A car, but I do think that with these V6s it is. Mine certainly feels a lot more lively running 97/99. If I have to fill up with 95Ron it's as if my handbrake is binding or VIS motor has packed up. I do think though, that to notice any difference in performance the car needs to be in tip top shape mechanically. For example, a dodgy VIS, exhaust leaks or misbehaving manifold certainly wont help matters. I didnt do any performance upgrades on my 160 until i'd had full service, changed oil, spark plugs etc