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#2108561 - 12/17/10 06:45 AM Amsoil Severe Gear 75W-90
Matchlight Offline


Registered: 09/18/06
Posts: 51
Loc: Goffstown (Manchvegas), NH
There was a time when Amsoil Severe Gear 75W-90 was the very best in that class of gear oils, is it still or has somebody come up with something better?

Thanks,

Adam.
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#2108564 - 12/17/10 06:51 AM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
qdeezie Offline


Registered: 08/10/10
Posts: 836
Loc: Charlotte, NC
I don't know if it's still the very best of the class, but I did read an Amsoil article stating that they recently reformulated it to be even better than their existing Severe Gear formula. This was as of September 2010.

I know I'm not answering your question, but I figured this is definitely good enough to pass on.

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#2108602 - 12/17/10 07:41 AM Re: Amsoil Severe Gear 75W-90 [Re: qdeezie]
daman Offline


Registered: 09/23/06
Posts: 10421
Loc: Bad Axe, MI
Any idea whats involved in the reformulation? i use SVG in my snowmobile chain cases.
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#2108657 - 12/17/10 08:44 AM Re: Amsoil Severe Gear 75W-90 [Re: daman]
Matchlight Offline


Registered: 09/18/06
Posts: 51
Loc: Goffstown (Manchvegas), NH
A reformulation can either hurt or help. It seems like it has hurt several manufacturers over the years, Quakerstate back in the '70's comes immediately to mind. Know Amsoil's reputation I have a hard time believing it will hurt them. I saw a test several years ago of all of the major gear oils within the 80W-90 and 75W-90 viscosity bracket and the Amsoil bested the entire field. It wasn't the best in every category, but it did the best overall. It really excelled in viscosity stability if I remember correctly. The one that surprised was Redline, who you always expect to do well, did not hold up well when things got hot. It seemed to burn early, found this out right after I filled the diff in Corvetted with the stuff.
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#2108668 - 12/17/10 08:58 AM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
chubbs1 Offline


Registered: 06/09/10
Posts: 4574
Loc: Merritt Island FL, USA
AMSOIL Severe Gear is one of the best gear oils and probably the best for a cold application like yours.
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#2108700 - 12/17/10 09:36 AM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
pcfxer Offline


Registered: 10/21/09
Posts: 391
Loc: Canada
I have a VERY difficult time believing that RedLine "failed" when things "got hot". Amsoil, Royal Purple and RedLine make fantastic products. If you are considering Amsoil go with it and see if you like it.
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#2108709 - 12/17/10 09:42 AM Re: Amsoil Severe Gear 75W-90 [Re: chubbs1]
hate2work Offline


Registered: 09/04/08
Posts: 4616
Loc: Western Washington
Originally Posted By: chubbs1
AMSOIL Severe Gear is one of the best gear oils and probably the best for a cold application like yours.


I agree, I doubt there is a better gear oil than SG.
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#2108813 - 12/17/10 11:05 AM Re: Amsoil Severe Gear 75W-90 [Re: pcfxer]
Matchlight Offline


Registered: 09/18/06
Posts: 51
Loc: Goffstown (Manchvegas), NH
Originally Posted By: pcfxer
I have a VERY difficult time believing that RedLine "failed" when things "got hot".

Like I said, I was shocked myself. If you search around in google for a while you would probably find the test that I am referencing. According to this particular test gear oil is neither Redline's or M1's forte.
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Industrial Lube User In The Really Big Rigs

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#2108898 - 12/17/10 12:30 PM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
If you're local stores don't carry synthetics, you can't go wrong with the boutique oil companies. Amsoil is an easy choice here.

IMO, its a coin toss among the boutique oil companies as I haven't seen a failure or excessive wear with any that I've installed.
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#2108918 - 12/17/10 12:54 PM Re: Amsoil Severe Gear 75W-90 [Re: daman]
qdeezie Offline


Registered: 08/10/10
Posts: 836
Loc: Charlotte, NC
Originally Posted By: daman
Any idea whats involved in the reformulation? i use SVG in my snowmobile chain cases.


It was increased extreme pressure protection and increased wear protection. As far as what was done to achieve that, the article didn't cover that. It was just the general "we reformulated it to be better" type article. It shows a graph of the 2 increases versus their old formula and competitors formulas that was conducted in 2007. They were clear on stating that the Sept. 2010 new product they were comparing it to was from September 2007.

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#2108931 - 12/17/10 01:13 PM Re: Amsoil Severe Gear 75W-90 [Re: qdeezie]
daman Offline


Registered: 09/23/06
Posts: 10421
Loc: Bad Axe, MI
Originally Posted By: qdeezie
Originally Posted By: daman
Any idea whats involved in the reformulation? i use SVG in my snowmobile chain cases.


It was increased extreme pressure protection and increased wear protection. As far as what was done to achieve that, the article didn't cover that. It was just the general "we reformulated it to be better" type article. It shows a graph of the 2 increases versus their old formula and competitors formulas that was conducted in 2007. They were clear on stating that the Sept. 2010 new product they were comparing it to was from September 2007.

Ahh so maybe a base and or additive change? should be good stuff.

thanks
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Current fill: AFE 0w30

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#2108943 - 12/17/10 01:24 PM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
qdeezie Offline


Registered: 08/10/10
Posts: 836
Loc: Charlotte, NC
Originally Posted By: Matchlight
A reformulation can either hurt or help. It seems like it has hurt several manufacturers over the years, Quakerstate back in the '70's comes immediately to mind. Know Amsoil's reputation I have a hard time believing it will hurt them. I saw a test several years ago of all of the major gear oils within the 80W-90 and 75W-90 viscosity bracket and the Amsoil bested the entire field. It wasn't the best in every category, but it did the best overall. It really excelled in viscosity stability if I remember correctly. The one that surprised was Redline, who you always expect to do well, did not hold up well when things got hot. It seemed to burn early, found this out right after I filled the diff in Corvetted with the stuff.


I agree 100% about the reformulation going either way but I'm trusting Amsoil to be better with the reformulation. I have 3 new bottles that I'll be using soon.

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#2108947 - 12/17/10 01:27 PM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
I wouldn't worry about the 'reformulation'. It has been and still will be one of the best in class.

Additives sometimes are phased out or superseded by the supplier(Lubrizol, Infineum...). If the supplier came out with something newer & better, then it gets used. Same could be said for a base stock, VII, VM, or..... Not everything is in continuum. Kudos to Amsoil improving as technology is made available. Double kudos for not charging me more!!!

It does look like its a tad thicker. Anyone want to wager on what the VOA of the new stuff looks like? more boron? moly? phos? a couple drops more of ester base oil?

2 different data sheets that I have for 75w90:

75w90 Amsoil
visc at 100 16.7 / 16.9
visc at 40 109.1 / 114.7
ViscIndx 165 / 161
brookfield 68150 / 69420
flashpt 220 / 210
pourpt -48 / -50
falex 2500 / >3500(rumor >4500)
4ballEP 66.17 / 75.64

Who would've thought that going thicker with gear oil is better for gear life Cheers1

BTW, the 75w110 and 75w140 looked improved in a similar way too.

If you read Amsoil's old gear oil study, you see where certain 'other' brands beat them in Falex and 4ball tests. The new numbers put Amsoil into the #1 spot laugh
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#2109609 - 12/18/10 06:40 AM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
NHHEMI Offline


Registered: 07/06/07
Posts: 5070
Loc: NH
Originally Posted By: Matchlight
Originally Posted By: pcfxer
I have a VERY difficult time believing that RedLine "failed" when things "got hot".

Like I said, I was shocked myself. If you search around in google for a while you would probably find the test that I am referencing. According to this particular test gear oil is neither Redline's or M1's forte.


Sounds like another person who read the White Papers gear oil testing results? If that is correct please be advised that those tests were commissioned, conducted, and reported on by Amsoil. The results being 100% accurate are highly questionable.

Take what you read with a big grain of salt IMHO and most of all remember it was done by Amsoil. It was not done by some independant lab or group testing gear oils on their own initiative. Amsoil claims an independant lab did the testing yet I have read many things contesting that as fully truthful. Not saying the results are 100% false either just understand who did it and factor that into your decision. This was not a fully independant test. Amsoil was behind it and had a big part in it.

Lots of the results listed can be contested by the gear oil mfg's own testing and published results( at the time the WP's came out ). I specifically checked on RP MaxGear( as I am a fan of their products )and found multiple questionable results/calims in the WP's from Amsoil. I looked at some of the others too, including Redline, and found similar issues. Again, take it with at least a little healthy skepticism(sp?).

Redline is an excellent gear oil with years and years of successful use. While I am not a big Mobil fluids fan you can't deny they make great products and they clearly offer products that are safe to use and are FF on countless vehicles. I would not stop using either because another mfg said they performed poorly. Amsoil gear oil is also a great product so no product bashing here by me. I just contest, strongly, those results and I get real ticked off when people start using those test results to advise/decide on what gear oil to buy( at the situation not the poster ).

Amsoil accomplished their goals with that report that is for sure. It pops up all the time in these discussions and people act as if it is now the holy bible of gear oils. Believing what one mfg says about it's competitors is not a smart move IMHO. Use that gray matter in your skull and think for yourself.
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#2109612 - 12/18/10 06:45 AM Re: Amsoil Severe Gear 75W-90 [Re: Matchlight]
NHHEMI Offline


Registered: 07/06/07
Posts: 5070
Loc: NH
Originally Posted By: Matchlight
There was a time when Amsoil Severe Gear 75W-90 was the very best in that class of gear oils, is it still or has somebody come up with something better?

Thanks,

Adam.


I don't know as you could/can say it is/was the very best but their products are generally "one of" the best for sure. If you like Amsoil products their gear oils are very good and would be a good choice. Use without fear.
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