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    Authenticity of DENSO Iridium TT

    OEM spec plugs are nickle plated standard NGK or DENSO (some engines left factor with 3 of each) and are spec'd to be replaced every 30k. I wanted the Iridium TT because they *should* last 100k-ish. For me it's convenience to not be changing them as often. I fully expect zero performance or...
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    Authenticity of DENSO Iridium TT

    This supplier is better at $0.68 per plug. Can produce 10,000 a day. These "DENSO JAPAN" plugs are made in Jhejiang China by Yiwu Kaixing E-Business Co. Ltd. Contact "Mr. Alex." BEST QUALITY...
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    Authenticity of DENSO Iridium TT

    If anyone needs to buy at least 100 spark plugs, these guys offer a great deal. $0.75 per plug! Best Quality! These "ASSEMBLED IN USA" plugs are made in Guongdong China, and can ship today...
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    Authenticity of DENSO Iridium TT

    I contacted Denso USA. They say there's nothing that they can do to help me with determining authenticity. They said try buying from an authorized dealer, which RA is not, ( but where they shipped from is the same address as an auto parts supplier that is). They said Canadian Tire is an...
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    Authenticity of DENSO Iridium TT

    These are the CT bought plugs. They generally look better, center electrode straighter (but not as good as I’d expect) and more obvious blue colour.
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    Authenticity of DENSO Iridium TT

    These are RA bought plugs. The pic of the single plug is probably the worst of the lot, center electrode is the most crooked
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    Authenticity of DENSO Iridium TT

    I’ve bought 6 plugs, same part #, from Canadian Tire, which is an authorized dealer. They have different codes stamped on them but after looking closely, I’m second guessing if the Rock Auto purchase ones are possibly genuine. They look quite similar, possibly from same production line but...
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    Update: Oil turns dark quickly

    My diesel oil turns jet black about 2 seconds of run time after a fresh oil change. It means nothing, has zero effect on lubrication. If your engine is so sludged that the valves are ticking due to blockages and low oil pressure, sure, maybe you need to clean/flush. That's a whole other...
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    Authenticity of DENSO Iridium TT

    Brilliant! Shipping label and invoice say: Rock Auto LLC 2782 Eagandale Blvd Eagan MN 55121 A google maps search of that address reveals Factory Motor Parts. DENSO'S website says they are an authorized dealer. Thank you!
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    Authenticity of DENSO Iridium TT

    What would that look like, where should I look? There are some codes on the box but I don't know how to read them. Box says copyright 2014.
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    Authenticity of DENSO Iridium TT

    I bought from RA because they're are few options to buy them in my area and I've had good luck with RA before. The main parts store in my area is Canadian Tire. They don't have them in stock, so RA was the choice. I do like the price at RA. They were about $11.33 Canadian per plug all in...
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    Authenticity of DENSO Iridium TT

    I bought DENSO Iridium TT plugs from RockAuto, part 4704, DENSO part IKH20TT. I am not overly impressed with the quality of them and have doubts about their authenticity. I emailed DENDO and they say RockAuto is not an authorized dealer. Seeing as RockAuto is a reseller, it is possible they have...
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    2004 4Runner Differential & Transfer Case

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by Snagglefoot</div><div class="ubbcode-body">When in Saskatchewan...... I believe BrianF is a big fan of this. </div></div> I hadn't considered that. Thank you.
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    2004 4Runner Differential & Transfer Case

    Good to know. Thanks. I'll put a vote in as well for Amsoil Signature Multi-vehicle ATF, with a bottle of LubeGuard. I did a full flush, 14+ qts. I also have a dipstick on my A340 transmission that uses T-IV, and added a remote spin on filter.
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    2004 4Runner Differential & Transfer Case

    In theory, a 75w-90 and 80-90 behave the same at temperature. It's only when cold that the 75 and 80 hypothetically differ ?
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    2004 4Runner Differential & Transfer Case

    I have 2004 4Runner with the 2WD / Full Time 4WD / 4 Lo transfer case. I need to change front & rear diff & transfer case fluids. The manual calls for: Front diff: 75w-90 GL-5 Rear diff: 90w GL-5, or 80w-90 GL-5 below -18C / 0F Transfer Case: 75w-90 GL-5 Both front and rear diffs are...
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    Additive Fallout / Separation Amsoil Gear Oil

    Amsoil's reply to my email said the product code on the bottle is from Jan 2015. Draining and remixing isn't really an option since there were multiple bottles, some had more, some had less separation. It's unclear how much of that stuff I'd have to mix with the front diff, the rear diff and...
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    Additive Fallout / Separation Amsoil Gear Oil

    I wonder how hot I'd have to microwave it etc to get those crystals to dissolve again. Would that have been an option before starting the job? Shaking the bottles does nothing to mix this as it's a hardened crystal like residue.
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    Lubegard Platinum Dosage

    Regardless of what you drain and add, if you need an ounce per quart and the transmission has 9 quarts........ Just dump the whole 10 oz bottle in. It won't hurt anything to have an extra ounce.
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