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  1. #1
    Member golfpro307's Avatar
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    Autolite spark plugs ,,,

    Anyone running them in there Optimax?? Thanks Chris
    Chris Beverly
    2005 Champion 206 Mercury Verado 275!!!

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  3. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #2
    I had a customer that did..... within a VERY short period of time:

    http://www.bbcboards.net/mercury-3-l...your-opti.html


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
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  4. Member golfpro307's Avatar
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    #3
    Don, I couldnt find any Ngk Izfr5g plugs here in Phoenix yesterday when changing them,, called my Mercury mechsnic and he said the Autolites Xp5224 is the same plug and will work... from what ive read on the web NGK mskes the Autoites ...Should I not run them ??2001 opti 225 seriel # ot388domething lol Thanks
    Chris Beverly
    2005 Champion 206 Mercury Verado 275!!!

  5. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #4
    Run ONLY the recommended NGK IZFR5G spark plugs in this engine.

    See the link (I provided above) for pictures of what the results of "car-o-heavy" plugs can do to your Optimax....


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #5
    .........."he's a French model".......
    Sorry- I couldn't resist. I trust Don, not the web. JMO.

  7. Member golfpro307's Avatar
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    #6
    Reason I asked was I got my info from my MASTER MERCURY MECHANIC ,,, yes I saw the thread and thanks,, but 1 pic of a bad plug could hsve been caused by several things ,, I changed out 1 2 years ago a Factory NGK that was cracked in half ,, just saying...
    Chris Beverly
    2005 Champion 206 Mercury Verado 275!!!

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    #7
    I'm sure the ngk equivalent probably ok, but no warranty. As far as autolites go......I wouldn't run an autolite in my lawnmower.

  9. Member golfpro307's Avatar
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    #8
    My question was if anybody is running them... I could not find any here locally yesterday and purchased the Autolites..... again NOT trying to skimp on money but there are 1000s of posts in other forums ,, Racing cars, jeeps, trucks and such saying nothing bad about these plugs. And if it pops up on Napa and Autozones as a cross refrence plug i WOULD HAVE TO BELIEVE THESE ARE FINE TO USE??
    Chris Beverly
    2005 Champion 206 Mercury Verado 275!!!

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    #9
    i cannot speak in terms of optimax/mercury specific, but i make my living working on cars and i have seen more than several times where the customer replaced their own spark plugs and used autolites because that is what most of your chain auto parts places push, and it ended up at my shop with a missfire issue. Pull out a plug to check it and there is a brand new autolite, put the manufactuer recommended plug in it (champion for dodge, acdelco gm, ngk honda and toyota etc.) and no more problems.

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    #10
    Aw hell - Let the guy run his Autolites. He's probably running Pennzoil too, so it don't matter. His motor, his bills. But my motor gets
    Mercury/ Quicksilver, MY bills!

  12. Upper Chesapeake Bay Club Moderator RiverRatMD's Avatar
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    #11
    If the Napa and Autozone books cross reference it to that plug I'm sure you'll be fine. You're right, those plugs probably didn't cause the problem in those pics, hell it ran fine for 9 minutes on them!! And I've NEVER heard of a MASTER MERCURY MECHANIC ever being wrong or telling a lie. Most master mercury mechanics think mercury parts are over-rated anyways. I run autolites in my lawnmower all the time - you should be fine
    '02 Gambler 2200 & '92 ProCraft 180 Power'd by Mercury

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  13. Tin Boats Moderator basstrackeroptimax's Avatar
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    #12
    Quote Originally Posted by rdc5445 View Post
    Aw hell - Let the guy run his Autolites. He's probably running Pennzoil too, so it don't matter. His motor, his bills. But my motor gets
    Mercury/ Quicksilver, MY bills!
    +1 same here.
    Roy
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  14. Member Triton19x2's Avatar
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    #13
    Quote Originally Posted by golfpro307 View Post
    Racing cars, jeeps, trucks and such saying nothing bad about these plugs.HAVE TO BELIEVE THESE ARE FINE TO USE??
    Don't see a boat motor in this list
    Let us know how they do

  15. Member golfpro307's Avatar
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    #14
    Thanks Don,, <moderator edit>.
    Last edited by EuropeanAM; 02-11-2013 at 09:17 AM.
    Chris Beverly
    2005 Champion 206 Mercury Verado 275!!!

  16. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #15
    Chris:

    No need to get upset... I'm not.

    I think others were (perhaps in frustration) trying to communicate what I've been struggling to say nicely.

    All we can do is offer the best, most-accurate information available... which you can certainly benefit from (learning from other's experience and/or mistakes), or choose not to.

    There's no problem for me personally either way... as I've learned that I should stick to fixing things "mechanical".


    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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    #16
    And. what the he!! is wrong with Pennzoil? I've been running it for 10 yrs. now, with no problems, my 225 on 2100 gambler still running 5900 rpms, 80mph!!........ :>)
    Mike Matthews

    U.S.N. 1963-1969

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    #17
    Ot
    Quote Originally Posted by Mr Gambler View Post
    And. what the he!! is wrong with Pennzoil? I've been running it for 10 yrs. now, with no problems, my 225 on 2100 gambler still running 5900 rpms, 80mph!!........ :>)
    Nothing wrong with Pennzoil..............in YOUR motor, but not in mine. Again, my money will be spent how I want, even though it's not the cheapest way.

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    #18
    I agree, I get most of my money from the gov. s.s. va ben. but, at $40.00 a gal it is not the cheapest! ....... :>)
    Mike Matthews

    U.S.N. 1963-1969

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    #19
    Quote Originally Posted by Mr Gambler View Post
    And. what the he!! is wrong with Pennzoil? I've been running it for 10 yrs. now, with no problems, my 225 on 2100 gambler still running 5900 rpms, 80mph!!........ :>)
    TCW3 is TCW3 for the most part, I guess.
    The Citgo is actually cheapest if you can find it.

    For the record I run Mercury everything

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    #20
    I forgot to mention I use the 100% synthetic, thats why it is $40.00 a gallon............ :>)
    Mike Matthews

    U.S.N. 1963-1969

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