unleaded

  1. JonMad

    Super unleaded - does it make a difference?

    Hi, Specifically on my '03 W209 CLK55, will I notice any difference if I go for super unleaded? If so, does it take a few miles for things to recalibrate to it, or is it pretty instant if the tank was near empty of normal uneladed? Cheers, Jon
  2. A

    Put unleaded in diesel and can't find second tank

    ...
  3. D

    Tesco super unleaded test

    I have recently decided to give super unleaded a try, i have been usiing tesco's 99RON as the nearest shell garage is 9 miles away. After running throw 2 tanks i checked my MPG & i have gained a whopping 40 miles per tank! whoo hooo! Still i am quite shocked by this & will be double checking as...
  4. B

    Super Unleaded?

    Please what are the advantages of super unleaded fuel over normal unleaded.....Its time to consider what I am getting after many years of using super unleaded in all cars I've owned. Thanks
  5. C

    Super unleaded worthwhile in c200k?

    Would i be wasting money by running on super?
  6. A

    What is the difference between premium and normal unleaded petrol?

    Not sure if this was raised but woudl be interested in knowing if anybody knows something concrete on hs subject. Yahoo answers gave me this, which seems plausible: http://answers.yahoo.com/question/index?qid=20070930132118AA1BaOz Agree?
  7. ET4

    1979 W123 280 CE ....un-leaded ???

    Evening all, I'm looking at buying a 1979 280ce. I did'nt ask the bloke who owns it whether he puts un-leaded in it or not, or if he does, should he be doing so ?? Do they run on un-leaded ok, or do they need converting with hardened valve seats or the like ??? Or would it be cheaper to just...
  8. 190ian

    Ultimate unleaded

    I filled my 190e up with pb ultimate unleaded and since then my idel is up the wall, it never used to do it before when i used it, i havent used it for a few months ,so why the sudden change in idel, any ideas or is it somthing different.
  9. C

    190 201 What is the Timing if Unleaded

    Hi everyone I have a 190 2.0 1989 (210) with a stromberg 175CD Carb. Can anyone tell me what the timing should be as it has been converted to unleaded? Cheers Col
  10. A

    Classics & Unleaded?

    Classic Mercs are very tempting, but will they run on unleaded or do they need expensive head work? The ones I have in mind are: 300 SEL 6.3 280 SL Pagoda Any ideas on how much it would cost to convert to unleaded if it needs to be done?
  11. mobeyone

    premium unleaded

    In my 202 and older mbs for that, i used to notice a sticker advising only use super unleaded. I note that this is absent from most modern Mbs, well those that i have seen anyway - any reason for this?
  12. imadoofus

    99 Octane Unleaded at Tesco

    Picked this up off another site this morning... Unleaded petrol with the highest octane (RON) of any fuel available on UK forecourts is now available at Tesco – guaranteeing the market’s best value, performance-enhancing fuel. The product is Super Unleaded 99 Octane and it will be rolled...
  13. garystu1965

    Nearly put unleaded in my car before !

    The nozzle was in the car ready to press as well :eek: I'd just bought some Redex diesel treatment, plonked it in and then saw the familiar "1.01p per litre" sign on the pump. I'm that giddy today I would have drove it out of the forecourt, clapped out and then phoned Redex in a rage...
  14. mickl

    converting a 1980 280ce (W123) to unleaded.

    has anyone had this done to there's or know what's involved? Would valve seats have to be done or would it just require a simple timing adjustment?
  15. R

    w123 230e 4 star to unleaded

    I got in touch with the local mers dealer today to ask what i have to do to change my 1984-5 w123 230e from leaded fuel to unleaded fuel and they said that i can just change over no problem then the man on the phone said that he personally would put some leaded fuel in every 3-4 tank fulls if...
  16. D

    Petrol engines before unleaded ie 1989

    Dear All As a matter of interest, I would be curious to know... 1 What fuel is used for mercedes engines originally manufactured to work with leaded fuel? 2 What are the implications of using unleaded for these engines for prolonged periods? Is there anything that needs to be modified...
  17. grasmere

    help please to drain unleaded from diesel tanks

    Hi guys, can anyone advise please . . . in another thread I mentioned about me putting unleaded in my diesel :mad: I am now trying to drain out the unleaded. There are 2 tanks, one either side of the prop shaft. Using an oil changing suction pump I have managed to drain one tank but...
  18. W

    CLK55 - unleaded or super unleaded?

    Hi, I'm thinking of buying a second hand CLK55 (2001 model). Can anyone tell me whether they will run on "standard" unleaded or does such a vehicle demand super unleaded. Also, while I'm on the subject, I'd appreciate anyone who has one, or who has had one, telling me the sort of mpg...
  19. G

    W123 Unleaded or Leaded?

    Can anyone tell me which W123 engines takeunleaded and which must run on leaded/4 star (or unleaded with an additive i.e. castrol valve master). I beliee the 200 is OK with unleaded The 230 must have leaded/4 star otherwise valve guides wear (according to honest john - see below Not sure...
  20. gIzzE

    AAARRHHH! I put unleaded in my diesel - please help an idiot out

    I can't believe what I did yesterday, my last cars were a 320d touring, audi a4 tdi avant, audi a4 tdi saloon and now I have an ML270cdi. And yesterday I put BP's ultimate unleaded in my car! Like an idiot I didn't even read the pump properly, I had filled up with ultimate diesel a couple of...
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