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Which brands of Diesel and Petrol do you find best for quality and MPG ?

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245

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    #32
    Jimbob 83
    Registered Users Posts: 2,033 ✭✭✭Jimbob 83


    Somebody needs a hug in this thread and it isn't me


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    #33
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    gpjordanf1 wrote: »
    So the additives to the fuel made the difference, like I said only knobheads buy that stuff, super fuel, clean fuel, premium fuel, what ever fuel. Its all the same in a standard car.

    The pump fuel makes a difference, additives make an even bigger difference. It's not all the same in a standard car. TBH you've been able to provide nothing but guff and bluster to this topic, have you anything meaningful to add? Or will your ego allow you to take something from it and let you see you've learned something here tonight?


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    #34
    -Chris-
    Closed Accounts Posts: 12,035 ✭✭✭✭-Chris-


    Texaco
    gpjordanf1 wrote: »
    Petrol is petrol, diesel is diesel, doesn't matter where ya buy it from.

    It cannot be manufactured, so quality is down to nature, not brand name!

    Anyone who thinks it makes a difference is obviously easily influenced by the media, and as they say " God Bless Them "

    The only thing that makes a difference in MPG etc is driving style and as they say dont drive like a " Knobhead !"
    gpjordanf1 wrote: »
    So the additives to the fuel made the difference, like I said only knobheads buy that stuff, super fuel, clean fuel, premium fuel, what ever fuel. Its all the same in a standard car.

    Do you see the difference?

    95RON octane is 95 octane petrol, but different petrol suppliers put different additive packages into that petrol and therefore supply different products to the end-user (whether you believe in the effects of those additives again will depend on your experience/research).

    The premise of the thread is a fair one imho. I don't know why you're being so dismissive.


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    #35
    gpjordanf1
    Closed Accounts Posts: 867 ✭✭✭gpjordanf1


    Texaco
    -Chris- wrote: »
    So we have one poster who says he can provide dyno results that show the difference in performance between fuels on his vehicle, and we have another who says there's no difference based on the fact he's never seen a difference.

    Who to believe... :rolleyes:

    Yet to be provided and based on admitted additives.

    Please.......

    Grade A Modding there!!! :rolleyes:


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    #36
    -Chris-
    Closed Accounts Posts: 12,035 ✭✭✭✭-Chris-


    Texaco
    gpjordanf1 wrote: »
    Yet to be provided and based on admitted additives.

    Please.......

    Grade A Modding there!!! :rolleyes:

    I'm not modding unless I'm posting in bold (I presume you have sigs turned on, seeing as you have one yourself, and I do make reference to that convention in my sig).

    I'm modding now, and I'm saying that I think you're Trolling based on your current posting style.

    You'd want to improve the tone of your posting asap or you'll be receiving a ban for Trolling.


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    #37
    Mech1
    Registered Users Posts: 5,089 ✭✭✭Mech1


    What effect would atmospheric pressure, ambient air temp, humidity etc have on a dyno result?


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    #38
    zilog_jones
    Registered Users Posts: 6,641 ✭✭✭zilog_jones


    gpjordanf1 wrote: »
    But I do know fuel and it hasn't changed in millions of years, I guess your car cant say the same.

    Fuel hasn't changed in "millions of years"? How old do you think petrol is? Do you not remember 12 years ago when you could still get leaded petrol? There was no change there? You're demanding proof from other posters yet have absolutely nothing to back your claims? :rolleyes:

    I've only switched to a diesel earlier this year, and so far have noticed no discernible difference between Topaz, Maxol, or Texaco, but haven't tried the latter two (or any others) enough yet...


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    #39
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    gpjordanf1 wrote: »
    Yet to be provided and based on admitted additives.

    Please.......

    Grade A Modding there!!! :rolleyes:

    Are you reading my posts? That was another additive that was put in on top... As for scanning dyno sheets? I think the members in here know me well enough to know I'm not bull****ting and wouldn't expect me to scan sheets at this hour of the night


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    #40
    Le King
    Closed Accounts Posts: 5,092 ✭✭✭Le King


    Maxol
    Gary ITR wrote: »
    My bubble is far from burst. The spec of my car doesn't matter because the only variable is where the fuel has come from. when we tune cars we get better results on Maxol, always and that's down to how it detonates.

    Like I said already different companies use additives so the fuel is different when it gets to the end user, we made 6BHP on a car today by adding something to the fuel. It's a boards users car so he can verify that.

    The fuel is always different as the additives are inconsistently applied. The only consistant fuel that I have found to be good for my car is Maxol E5. The rest are largely inconsistent. Got a savage tank from Tesco two months ago. But 90% of the time I get a really bad MPG from there.

    Voted for Esso by mistake.


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    #41
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    Mech1 wrote: »
    What effect would atmospheric pressure, ambient air temp, humidity etc have on a dyno result?

    Not a lot, the dyno takes all of this into account, it has it's own weather station for this very reason. So on a given day with the temp probes in the same positions the results will be the same. If we were to say drop the temp probe into the engine bay the result would be different

    We also use a Dyno Dynamics machine which are know to be the most accurate/consistent machines


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    #42
    650Ginge
    Registered Users Posts: 900 ✭✭✭650Ginge


    gpjordanf1 wrote: »
    I dont see any proof coming to prove otherwise and as a mod I dont see what your problem is with the question??? Provide proof as requested??

    I've been driving longer than I care to remember and Ive yet to see a difference or been showing proof of it!

    Thats my proof, life experience.

    You have got some attitude. Life experience you are getting on like your 13 years old. Either contribute to the discussion or back down, you're getting a bit boring.


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    #43
    Monty.
    Closed Accounts Posts: 696 ✭✭✭Monty.


    No brand name / independent supplier / other
    gpjordanf1 wrote: »

    I've been driving longer than I care to remember and Ive yet to see a difference or been showing proof of it!

    Thats my proof, life experience.

    Ok, that's your opinion, but perhaps either you, or your cars, have not noticed the subtle differences other people have, so let them have their say and opinion as well.


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    #44
    Mech1
    Registered Users Posts: 5,089 ✭✭✭Mech1


    Gary ITR wrote: »
    Not a lot, the dyno takes all of this into account. So on a given day with the temp probes in the same positions the results will be the same. If we were to say drop the temp probe into the engine bay the result would be different

    so a dyno takes atmospheric pressure / humidity into account when working out the bhp?


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    #45
    gpjordanf1
    Closed Accounts Posts: 867 ✭✭✭gpjordanf1


    Texaco
    Ok

    So I've rubbed everyone up the wrong way, grand, I'll back off. Apologies all round.


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    #46
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    Mech1 wrote: »
    so a dyno takes atmospheric pressure / humidity into account when working out the bhp?

    It has a weather station there to work out what it needs. I'm not going to give an answer to that question because I'm not 100% sure what it measures or how it does it but I will find out for you on Monday (I'm not the dyno operator)

    I have seen cars come in, in the height of winter and make the same power on a warm day though

    EDIT: Just found out there, yes our machine does measure Barometric Pressure and Relative Humidity along with the Ambient Temperature


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    #47
    Mech1
    Registered Users Posts: 5,089 ✭✭✭Mech1


    on your dyno printouts does it give a correction factor?

    like SAE-J1349?


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    #48
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    See my edit above :)


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    #49
    Mech1
    Registered Users Posts: 5,089 ✭✭✭Mech1


    what correction factor are you using?


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    #50
    Gary ITR
    Closed Accounts Posts: 16,805 ✭✭✭✭Gary ITR


    Tesco
    I haven't got that info to hand dude


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    #51
    Midnight_EG
    Registered Users Posts: 9,701 ✭✭✭Midnight_EG


    Tesco
    I can provide dyno sheets showing difference in fuel from the same place Gary_ITR gets his...157bhp on Topaz and 163 on Maxol E5 if gpfjordan cares so much


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    #52
    Monty.
    Closed Accounts Posts: 696 ✭✭✭Monty.


    No brand name / independent supplier / other
    Midnight_EG wrote: »
    I can provide dyno sheets showing difference in fuel from the same place Gary_ITR gets his...157bhp on Topaz and 163 on Maxol E5 if gpfjordan cares so much

    Great info.
    Would you find topaz and maxol the best, any other good ones ?


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    #53
    Midnight_EG
    Registered Users Posts: 9,701 ✭✭✭Midnight_EG


    Tesco
    Monty. wrote: »
    Would you find topaz and maxol the best, any other good ones ?

    I generally only use Topaz, Esso or Maxol, with Maxol being my preferred option. Almost always use Octane Booster too though


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    #54
    challengemaster
    Registered Users Posts: 16,931 ✭✭✭✭challengemaster


    Gary ITR wrote: »
    Are you reading my posts? That was another additive that was put in on top... As for scanning dyno sheets? I think the members in here know me well enough to know I'm not bull****ting and wouldn't expect me to scan sheets at this hour of the night

    Ah now... Sure haven't ya nothing better to do anyway? :pac:

    :rolleyes:


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    #55
    robbie_998
    Closed Accounts Posts: 4,222 ✭✭✭robbie_998


    I mostly buy Texaco (with techron) and i think its 98 or 99 rating on it.


    i honestly cant for the life of me say why but for some reason i have it bet into my head that Applegreen is devil fuel and Texaco are gods.

    but Topaz and Esso i would have no problem filling up at.

    dunno about emo.. though on mount brown its usually quite cheap.

    anyone have statics between the lot ?


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    #56
    snowman707
    Closed Accounts Posts: 2,279 ✭✭✭snowman707


    I’ve never noticed a difference in quality between brands
    we use Morris Oil mainly because of family links.

    Saw a Great Gas tanker topping up the local Texaco pumps recently. which IMO makes this poll useless


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    #57
    stealthyspeeder
    Registered Users Posts: 4,663 ✭✭✭stealthyspeeder


    Tesco
    robbie_998 wrote: »
    I mostly buy Texaco (with techron) and i think its 98 or 99 rating on it.


    i honestly cant for the life of me say why but for some reason i have it bet into my head that Applegreen is devil fuel and Texaco are gods.

    but Topaz and Esso i would have no problem filling up at.

    dunno about emo.. though on mount brown its usually quite cheap.

    anyone have statics between the lot ?

    As far as im aware Techron is just additives which reduce the natural wear and corrosion form the petrols chemical composition on the fuel pump (open to correction here?). I dont believe there is any performance increase gained from Texaco petrol or claimed by Texaco? Its 95 RON.

    Turbo and supercharged cars often see much better performance gains from using higher RON petrol, it solely means that that petrol/air mixture requires more heat to detonate. Therefore pre detonation (knock) is reduced (increasing power) as the fuel is being detonated at the correct time according to the map that the engine is using.


  • Options
    #58
    opinion guy
    Closed Accounts Posts: 11,001 ✭✭✭✭opinion guy


    Texaco
    Gary ITR wrote: »
    The pump fuel makes a difference, additives make an even bigger difference. It's not all the same in a standard car. TBH you've been able to provide nothing but guff and bluster to this topic, have you anything meaningful to add? Or will your ego allow you to take something from it and let you see you've learned something here tonight?

    Gary - does dipetane make any difference to power output in diesels ??
    Midnight_EG wrote: »
    I can provide dyno sheets showing difference in fuel from the same place Gary_ITR gets his...157bhp on Topaz and 163 on Maxol E5 if gpfjordan cares so much

    Same place - is it a spefici garage or any old Maxol E5 ?
    Midnight_EG wrote: »
    Almost always use Octane Booster too though
    What now ?
    Whats octane booster ?


  • Options
    #59
    stealthyspeeder
    Registered Users Posts: 4,663 ✭✭✭stealthyspeeder


    Tesco
    opinion guy wrote: »
    What now ?
    Whats octane booster ?

    an additive which can be added to a tank of petrol which effectively makes the petrol less combustable. This at first seems counter intuitive, but this slight increase in the energy that is required to make the fuel detonate can eliminate a lot of engine knock.

    Find your nearest EVO owner who has tuned his car to learn more!


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    #60
    opinion guy
    Closed Accounts Posts: 11,001 ✭✭✭✭opinion guy


    Texaco
    You know I hadn't made this connection before but I've noticed last day or two engine (diesel) seems a bit more rough than usual since I filled her up at garage on the quays in Dublin. Can't remember brand off hand but I'll check it next time I'm by there.


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    #61
    mm_surf
    Registered Users Posts: 183 ✭✭mm_surf


    Engines with knock sensors will notice a difference, those without will not.

    My car has an agressive map (from factory, its a VR4), in that it pushes timing & fuel load until it sees/hears knock, then backs off a bit. It does this actively, adjusting the map continously.

    I've never noticed much difference in petrol stations, except for two notible exceptions:

    Maxol E5 - much more power, but as it uses fuel as much as it can, the mileage goes down by about 20%. Fun but short lived!

    Tesco - Got a tank every now & then, and it never felt quite right - so I did a test one week. I was on a 4 day training course, 200 mile round trip every day. Weather nice & consistent, same traffic & same time of day each trip. Long enough to "smooth out" any inconsistencies. The tesco petrol gave 25% less mpg.

    Genreally use Texaco, but that's pure convenience. Local station and all that, generally as cheap as anywhere else. So generally speaking I avoid Maxol (if I know I'm going on a long run), or Tesco.

    M.


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