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post #1 of (permalink) Old 07-03-2002, 09:03 AM
Wrangler88
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amsoil vs Mobil 1

After some doing some research, i'm going to say that i believe most of us around here use mobile one to put in our vehicles...and i think we are all happy with it, anyone, anyone running amsoil, they say that u can go between 25K on oil changes, yikes!, anyone say this stuff is good, its been a out there for a while, and its the most expensive, should i switch over to it, an engine guy that my dad knows who rebuilds boat motors, swears by the stuff and says when he takes apart motors that have run it they look nearly new, which makes me wonder why hes taking them apart??, but anyway, just wondering what u oil guru's think outhere, have a good one boys!
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post #2 of (permalink) Old 07-03-2002, 10:15 AM
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Re: amsoil vs Mobil 1

I've never heard a bad thing about Amsoil. I'm just too cheap to buy it. I change my oil (non-synthetic) at 3k religiously, so I don't think it'd help much anyway.
post #3 of (permalink) Old 07-03-2002, 10:23 AM
 
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Re: amsoil vs Mobil 1

I'd have to say that as long as you change your oil every 3k it doesn't matter much. I run Exxon Superflo in all my vehicles and the inners all look great.
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post #4 of (permalink) Old 07-03-2002, 10:40 AM
 
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Re: amsoil vs Mobil 1

<font face="Comic Sans MS">While they may claim you can increase your intervals between canges to 25k, what that does *not* take into account is how much junk your engine will dump into your oil, blowby gasses, acidic stuff, etc... So typically you are better off to change anyhow. I'd bet that's the real issue with most oils... [img]images/icons/crazy.gif[/img] Not that they break down but just that they just get filled up with contaminants... [img]images/icons/crazy.gif[/img]</font>
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post #5 of (permalink) Old 07-03-2002, 11:55 AM
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Re: amsoil vs Mobil 1

First let me say that opinions on oil are like opinions on tires ..varied and conflicting..

I somewhat agree with Sandman. My mother went over twice around on the odometer using Mobil 1 with just one annual oil change and filter changes every recommended interval (every 7000 +/- miles). It never used more than 1/2 quart between filter changes. It never needed any internal engine work and was still quiet when she gave it away to a friend (sun beaten dash and shot head liner).

I feel that you can do the 12/25 schedule as long as you change your filters at the recommended time. Naturally I exceed the need and do it twice a year (spring and fall) regardless of mileage ..and yes, Mobil 1 is my synthetic of choice (since it came out).

Paraffin based oils are okay to a point. The 3month/3000 mile schedule works well. You can not achieve the cold start (near or below freezing) performance of a synthetic with any paraffin based oil ...nor can paraffin based oils withstand the heat that most synthetics can. Their operating range is just so much broader than paraffin based oil. If you live in a 4 season climate ...I wouldn't use anything else especially if I owned the engine from new and had total control of its maintenance.
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post #6 of (permalink) Old 07-03-2002, 12:16 PM
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Re: amsoil vs Mobil 1

Where is everyone getting their synthetic oils? I can't find any around where I live.
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post #7 of (permalink) Old 07-03-2002, 12:40 PM
 
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Re: amsoil vs Mobil 1

Advance Auto, Autozone, O'Reillys, etc all carry synthetic oils.
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post #8 of (permalink) Old 07-03-2002, 01:02 PM
 
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Re: amsoil vs Mobil 1

walmart carries mobil 1, and if ya shop at kmart (dunno why ya would)...they 'should' carry it too.
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post #9 of (permalink) Old 07-05-2002, 11:35 AM
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Re: amsoil vs Mobil 1

I have always used Mobil 1. I am too cheap to buy Amsoil. A bunch of guys in my club swear by it though.

I swapped a Chevy motor into my Jeep some time back (the motor had 1800 miles on it) and ran conventioanl motor oil in it for the first few changes. I switched the entire drivetrain (now with 8K miles on the motor) to Mobil 1 stuff (motor, tranny, TX case, diffs) and my gas mileage increased. My only question is the oil pressure dropped a bit at idle after the change after warm up. Is that normal for synthetic - I have never noticed that in any other vehicle I have owned.
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