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Evo Magazine Fuel Test

Discussion in 'Motors' started by arcamalpha, 28 Jan 2006.

  1. arcamalpha

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,147

    My uncle told me the Evo Mag did a review of Optimax/Ultimate/Tesco99 a month or two ago. I tried looking on their website but can't find it.

    Anyone got an electronic copy?
     
  2. Coco

    Wise Guy

    Joined: 16 Jul 2004

    Posts: 1,795

    Location: Leicestershire

    Post up your email addy chap.

    It's very wordy & still leaves many variables for anything conclusive.
    I was suprised to find that the new M5 didn't adjust to the different typres of fuel, boggo 95 RON performing the same as Ultimate/OptiPlop and 99Ron.

    evo's advice... "if your car feels friskier and smoother-running on a particular fuel, use it. Mind, if that fuel wasn't Optimax, and having seen the evidence of its cleaning abililites, we'd still be inclined to use a tankful every few fill-ups."
    And also use 'busy' petrol-stations to get fresher fuel.
     
  3. arcamalpha

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,147

    Cheers Coco. arcam_alpha AT hotm com
     
  4. Stonedofmoo

    Soldato

    Joined: 24 Oct 2002

    Posts: 6,245

    Location: Portsmouth

    Yeah I wouldnt mind reading that too

    Stonedofmoo@hotmail.com

    Reason being when Optimax wasnt available I used Tesco 99 ron and I had some really lumpy idling in the mornings, and occasional hicups when driving along. The engine just didnt run right.

    Since swapping back to Optimax everything is back to normal
     
  5. MaXXeH

    Wise Guy

    Joined: 31 Dec 2002

    Posts: 1,032

    Location: on my PC

    i have a little engine 1.3 polo, but tesco petrol makes my engine run well lumpy in the morn, sounds ruff as u like and bp runs sweet as a nut dont see how it can make much diff they are both 95ron are they not?
     
  6. [TW]Fox

    Man of Honour

    Joined: 17 Oct 2002

    Posts: 155,946

    I find that if I put standard petrol in my 2.0 Zetec engine, it loses 50bhp.

    As soon as I put Optimax in, it has 200bhp and will do 0-60 in 5 seconds. I find paying 95p for Optimax in bog standard, mass produced, non performance orientated engine really worthwhile. It makes me feel special standing at the Optimax pump, putting it in, pretending I've got a Jap car that needs 100 ron - I notice the Saxo drivers etc feeling the same way ;)
     
  7. arcamalpha

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,147

    It must be sad.
     
  8. Bear

    Capodecina

    Joined: 24 Oct 2002

    Posts: 12,586

    Location: Bucks and Edinburgh

    Thats odd because mine runs fine on Tescos 99RON in fact, I couldnt tell the difference between that and Optimax :confused:
     
  9. Type_R

    Soldato

    Joined: 18 Oct 2002

    Posts: 6,099

    Location: EGBB

    Its funny then how some non-jap cars read 'Super Unleaded Only' - perhaps you just choose not to read the labels ;)
     
  10. atpbx

    Capodecina

    Joined: 21 Oct 2002

    Posts: 21,452

    Whoosh straight over another one's head.

    Fox must be laughing in to his cornflakes.
     
  11. inoxx

    Gangster

    Joined: 13 Sep 2005

    Posts: 135

    They did a similar test between different types of petrol on Fifth Gear.
    The conclusion was for high powered cars like imprezzas and evos its worth using the high RON stuff as u gain a few hps but for the rest its not worth it.
     
  12. Hate

    Soldato

    Joined: 18 Oct 2002

    Posts: 7,175

    Location: Sussex

  13. Stonedofmoo

    Soldato

    Joined: 24 Oct 2002

    Posts: 6,245

    Location: Portsmouth

    I know mate. At first I put it down to some problem with the engine such as old spark plugs or possibly a dodgy maf or lambada sensor. But the fact is as soon as I swapped back to Optimax it's been running perfectly, and when I posted it up another R owner said he was having the same problems.

    He too is swapping back to Optimax to see if it cures it for him as well
     
  14. Spanker

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,547

    Location: Snipers hide

    I use the Tesco 99Ron at the moment, mainly because my manual and a small sticker in filler cap says Super Unleaded is preferred.
     
  15. Dandle

    Mobster

    Joined: 4 Nov 2003

    Posts: 4,256

    Location: Ashford

    I posted a while ago about problems I was having with my T4 using 99ron fuel I wasnt sure if something was failing(i.e.coil pack) or it was the fuel(it started happening after 2 or 3 tank fulls). From the replies I got on here people seemed to think my car was cutting boost even though the car didnt seem to be boosting any harder, I now think the car was cutting the ignition probably due to det. Anyway went back to Optimax and all is fine again now.
     
  16. Shikkaka

    Mobster

    Joined: 10 Jun 2003

    Posts: 2,752

    Location: Nottingham

    I use BP Ultimate normally on my 2.0l megane coupe. Just recently I had to fill up on tesco normal petrol (didnt have enough petrol to get to the BP garage) and its been running quite rough and really idling badly in the mornings. Just gone back to BP Ultimate today and the car is running alot smoother and sounds better.
     
  17. Demon

    Soldato

    Joined: 22 Oct 2002

    Posts: 6,903

    Location: Near Cheltenham

    Thats a bit harsh!
    There is plenty of science behind higher RON fuels, and to some cars which can take advantage, the difference can be quite large..
    Smart Roadster Coupe, not my bag, but 98/99 Ron fuel makes a measurable difference in performance..
    Even my old Astra GTE16V had a knock sensor, and so always advanced the timing as much as possible, hence was able to take advantge of higher RON Fuels, ditto the Corrado VR6..


    The EVO article was a little open ended.. it's best to find a decent forum for your particular car and you should get some more valid information...
     
  18. Stonedofmoo

    Soldato

    Joined: 24 Oct 2002

    Posts: 6,245

    Location: Portsmouth

  19. Serj

    Mobster

    Joined: 18 Nov 2004

    Posts: 3,581

    Location: Bournemouth

    Optimax makes my car far more economical. I get about 30mpg using normal unleaded, but with Optimax i get as much as 38mpg. I used to struggle to get 280 miles out of a tank, now i can easily get 340.
     
  20. burns

    Mobster

    Joined: 1 Nov 2002

    Posts: 3,708

    The 1.9XU in the 309 and 205 GTis should only be run on four star or super unleaded, at least 98 RON IIRC. Either that or you retard your ignition and loose performance. Quite a few cars designed for unleaded expect high RON petrol too.