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Thread: Best Spark Plugs for Fuel Economy?

  1. #41
    Senior Member Mitz's Avatar
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    Quote Originally Posted by Gnestovia View Post
    Hey! I got NGK Ruthenium HX spark plugs to try out!
    Nice .. while I was the first to acquire .. you'll be the first to actually use it..

    The following videos were my tests on the bench:





    Links:
    https://www.youtube.com/watch?v=OQrAguoUy38
    https://www.youtube.com/watch?v=je9bFQEG6K4



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    Really great informational videos. Shows good comparison between the different kind of spark plugs. But yes, when I install them, I'll give my initial response and details on how they perform.

  4. #43
    House Elf Eggman's Avatar
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    Quote Originally Posted by Gnestovia View Post
    But yes, when I install them, I'll give my initial response and details on how they perform.
    How will you measure their performance?

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 49.7 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.7 mpg (Imp)


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    Senior Member Dirk Diggler's Avatar
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    Quote Originally Posted by stevedmc View Post
    Please excuse my rant about those Bosch 4 prong platinum plugs which are garbage. I just did a google Search for the Ruthenium plugs and they actually look ok. I still wouldn’t recommend anything other than our OEM plugs though. I change mine every 100k miles and each time I’ve bern amazed at how nice the old plugs look. I feel stupid for replacing plugs in such good condition but I do it anyway as preventive maintenance.
    This. I think I read Fummins saying you can go way past 100k miles with the OEM plugs, but there's a reason your car will hit 400k miles lol.

  6. #45
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    Got the spark plugs in.

    Alright guys, it took me long enough to get around to get the NGK spark plugs in. I have to say, I did noticed a difference on how the engine starts and runs. Now it's not a "huge" difference but it's enough that I can notice. So, starting the car seems more smooth including when the engine idles. Accelerating seems to be the same but in a way it feels more smooth. Will I be keeping the spark plugs in? Yes. Do I recommend getting them? I say yes as well. Also I will do a long term test as well. I don't drive much, so this will be a while.
    Attached Images Attached Images  

  7. #46
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    Anyone knows if the NGK 7090 BKR5EGP G-Power Spark Plug can be used on our Mirage G4?

  8. #47
    Cornwallis Fummins's Avatar
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    Quote Originally Posted by Newbie99 View Post
    Anyone knows if the NGK 7090 BKR5EGP G-Power Spark Plug can be used on our Mirage G4?
    Possibly? But why? That's just a platinum plug where the oem used iridium that should and usually does last beyond 100,000miles.

    Before eggman gets on your case, add a car to the garage https://mirageforum.com/forum/dto_garage.php?do=add section so everyone knows what model, engine, transmission you have without asking everytime.
    My mom says I'm cool

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.4 mpg (US) ... 15.9 km/L ... 6.3 L/100 km ... 44.9 mpg (Imp)


  9. #48
    Moderator inuvik's Avatar
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    I'm with Fummins, just use the OEM Iridium plugs or replace them with another set of compatible Iridium plugs from another manufacturer.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.4 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.5 mpg (Imp)


  10. #49
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    Anyone tried brisk spark plug?

  11. #50
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    Ok noted..will add my car to my garage



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