#664494 - 11/09/06 10:46 PM
Mobil 1 not such a good oil anymore???
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ewraven
Post Master Supreme
Registered: 03/30/02
Posts: 44939
Loc: Dept. of Ruminant Procurement
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This is an interesting development; a guy ran Mobil 1 through a Gas Chromatograph and it came up as a Group III oil. I don't understand alot of the terminology from the thread though. But looking at Wikipedia; it looks like a group III basestock is really just any other dyno oil, however some of the cheaper synthetics are really group III's too. And I guess Mobil 1 used to use a group IV or V basestock, however as it appears with these new findings, it is no different than any other oil on store shelves...
http://theoildrop.server101.com/forums/s...part=1&vc=1
Quote:
I just finished reading the 21 pages of this thread. Tom's tests of Mobil 1 EP 15W-50 and Mobil 1 EP 5W-30 appear to be valid and correct. Particularly enlightening is his statement that:
"The new M1 EP 5W-30 SM dated Oct 2006 just came out of the G.C. and it is MOSTLY mineral oil, presumably Group III. It also contains a good slug of AN and some PAO, but little or no ester."
Also enlightening is Mobil's failure to refute the evidence that at some point in time it switched its Mobil 1 EP (and thus presumably its Mobil 1) formula such that it now contains anywhere between a large amount of, to mostly, Group III base stock.
I agree with those of you who say that Mobil has for years led the public to believe that both oils used solely Group IV and/or Group V as the base stock, and has used that as the reason for the high price of those oils. It now appears that we have been mislead and overcharged. Frankly, if Tom's tests are correct, what Mobil has done doesn't surprise me a bit. It is just one more example of the fraud and deceit that pervades big business in this country.
I've been a Mobil 1 and Mobil 1 EP user and supporter for years, but there's no way I'll pay the high price that Mobil charges for oils that are largely or mainly a Group III base stock. Nor will I do business with a company that has defrauded and lied to me. As others have pointed out, the performance of the oils is not the point. The point is the manner in which Mobil has conducted itself. I'm going to see how this plays out, but it looks like I'll be switching to another oil. In the meantime, I'm going to check out German Castrol a lot more than I have in the past.
Anyone else heard of this?
I had been considering changing over to Amsoil motor oil anyway. I may go ahead with that now. LOL I just changed my oil this afternoon too. I could've returned that five quart jug back to Wal-Mart.
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#664498 - 11/10/06 09:17 AM
Re: Mobil 1 not such a good oil anymore???
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FCobra94
Post Master Supreme
Registered: 10/22/01
Posts: 19689
Loc: MD
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#664500 - 11/10/06 09:53 AM
Re: Mobil 1 not such a good oil anymore???
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Buzzbomb
Sr Member
Registered: 11/02/01
Posts: 1197
Loc: Bryan, Ohio, USA
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Quote:
There's really nothing wrong with the Group III oils per se, just the fact that they arent true synthetics but rather engineered dino oil. IIRC the court ruling was that GroupIII base stocks are modified to the point where they can be considered manmade, hence the allowance for calling them "synthetic".
^^
Correct.
The dino oil is so refined that is shares more in common with synthetic than mineral so it can be legally marketed as a synthetic oil. Castrol Syntec is another example.
Technically, there is nothing wrong with Group III as stated above. It's good oil, but if you wanted synthetic oil in the first place and thought you were getting synthetic, therein lies the problem.
As far as the $40 DIY oil change, yeah that's steep, but it averages out if you go the extended drain interval route. That's the only way it's economical. If you're changing the oil every 3 months it's a waste of money and are better off with using something cheaper.
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#664501 - 11/10/06 10:06 AM
Re: Mobil 1 not such a good oil anymore???
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OnyxEros
Post Master Supreme
Registered: 02/17/03
Posts: 18130
Loc: Seattle
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Royal Purple Race FTMFW!!!!
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#664502 - 11/10/06 11:39 AM
Re: Mobil 1 not such a good oil anymore???
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Design
Post Master Supreme
Registered: 12/11/02
Posts: 11519
Loc: The OC
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Wonder if Mitsu will be updating their owner's manual? 
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#664512 - 11/13/06 06:42 AM
Re: Mobil 1 not such a good oil anymore???
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Hey Its Supraman
Post Master Supreme
Registered: 02/08/01
Posts: 40073
Loc: Colorado
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Quote:
I don't care how good an oil is, a 15k interval is just asking for trouble.
I change mine ever 5K using synthetic (every 3K if I was using dino).
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#664513 - 11/13/06 07:24 AM
Re: Mobil 1 not such a good oil anymore???
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NHRATA01
Post Master
Registered: 10/05/01
Posts: 2030
Loc: New York
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Thats the interval I use too, mainly because its easy to remember.
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Moderator: auxilary, Professor Paki
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I guess they figured that the only way to stay competitive with everyone else is to lower quality 
