Mobil High mileage oil
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This is a discussion on Mobil High mileage oil within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I've been seeing an ad for mobil high endurance oil 5000, 7500, 15000 miles between changes. I'm just trying to ...

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    Mobil High mileage oil

    I've been seeing an ad for mobil high endurance oil 5000, 7500, 15000 miles between changes. I'm just trying to get an opinion wether or not I should use this oil. I tried to look for it to see if it was synthetic or not( been using Mobil 1 ). I think that if it is a synthetic oil it should be ok. I don't really drive my car too hard and ony race every now and then.
    I plan on getting the 7500 mile oil. Any opinions on this?

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    Registered User yo vanilla's Avatar
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    ive heard a little about this oil but nothing more than its out there. i'm interested to know what it is too, since i use mobil1 in pretty much everything
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    Registered User yo vanilla's Avatar
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    k, look here first http://www.mobiloil.com/USA-English/.../Homepage.aspx

    then here for the 5000 FAQ http://www.mobiloil.com/USA-English/...AQs.aspx#FAQs1

    basically the 5000 is dino oil, the 7500 is a blend, and the extended performance is a synthetic.

    blends are a waste of money and a huge marketing tool. just use the full synthetic and here's why: a good synthetic like mobil1 is made up of long, long strings of molecules that are all the same size. these molecules first are able to better distribute the workload (translating to cooler temps AND smoother lubrication. and second stay together longer which gives you longer oil life (heat breaks down the oil. if the oil doesn't get so hot, it takes longer to break down.

    to contrast a dino oil has shorter strings of molecules which vary in size. the small molecules take the brunt of the work, and the larger ones are just kind of there for the show. the small molecules therefore have more work to do, which heats them up faster and therefore breaks the strings down quicker. its like having half the muscles to lift a given weight.

    so you could say that a blend *might* last to an interval between the dino and full syn, but really half of your oil is going to be worn faster and the other half that would normally last a long time is now taking the brunt of the workload, wearing it out faster as well.

    make sense? trivia: the Z06 uses mobil1 because the engineers found the oil tems were much cooler than with dino oil. they saved $500 per car because otherwise it would have required an outboard oil cooler
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    He simply abides. SD_GR's Avatar
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    Any Mobil1 oil ought to give you over 5K mi service per drain interval under normal use provided you use an appropriate viscosity for your area's conditions, or some approximation thereof -- IOW no 15W-50 in Iceland and no 0W-20 in Mauritania.

    I've looked at the discussions of the 15K oils and they seem to feature fortified additive packages. I've not looked further since I've already settled on a very robust Mobil1 formulation, the 5W-40 aka poor-man's-Delvac1, for my motor and the data I've gotten with a ~6K drain interval is just fine.

    Regardless of oil maker claims you must follow the drain interval in the manual while under warranty of course, so 7.5k mi is tops anyway.
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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by yo vanilla
    blends are a waste of money and a huge marketing tool
    Usually; however, there are now some excellent blends out there; Motul and Castrol immediately come to mind. I've seen great data with these here and there online. There is also the specialist American firm, Schaeffer's (sp?) that produces blends people rave about (no personal experience).

    The real issue is cost vs. performance. If a blend is priced closer to a dino and exceeds the dino in performance, it may very well be a great choice for many applications. The trouble is that many blends are priced closer to full synths, making them difficult to buy while making an informed decision.
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    still should change the filter and if that's the case, might as well change the whole kit-n-kaboodle since you're already dirty and under the car.
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    Im sticking with AMS Oil
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    tan
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    forget the hype and stick to a good group III/IV oil and follow Subaru's recommendation.

    If you want to extend the oil changes -- group IV oil and a bypass filtration system plus oil analysis

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    So what's the difference between the 15000 mile oil and regular Mobil 1 full synthetic?

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    los
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    Thumbs down

    The last 2 times I've had my oil changed in my 240SX (187,000 miles) I used the Mobil High Mileage stuff. Now, I don't know if this is a coincidence or not, but within about 1500 miles my oil was damn near completely gone. Each time that happend I filled it back up using regular Mobil 1 and drove it an additional 1500 miles, and both times at the end of the second 1500 miles I still had all my oil.

    I don't think I'll be using the high mileage stuff anymore.

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    He simply abides. SD_GR's Avatar
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    Basically the differences lie in the additive package from what I can tell.

    IMO any flavour M1 of the correct viscosty for your area will provide excellent protection provided your vehicle is correctly maintained. IOW, if you use the correct air filter and have no leaks in the intake system and your PCV works etc., pick a flavour you like and go for it but pay attention to viscosity and warranty requirements. If you use one of those aftermarket cone filters etc. or your intake tract is faulty and lets dirt into the motor, that's another story. It's also another story if you enter Paris-Dakar style raids etc., but for most people and most uses all the M1 distinctions are mostly academic.

    I'm guessing they'll have to thin out the product line at some point once they figure out what people are actually buying. Current best of breed M1 oils IMO are the 5W-40 Truck/SUV, the 0W-30R race oil, and the 15W-50 at least for our market but no matter, that's just IMO and they're all solid products.
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    The world breaks everyone and afterward many are strong in the broken places. Ernest Hemingway
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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