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What brand fluid do you use for your Diff's and transfercase?
Cheapest i can find. 7%  7%  [ 2 ]
Amsoil 63%  63%  [ 19 ]
Lucus 0%  0%  [ 0 ]
Royal Purple 10%  10%  [ 3 ]
Vavoline 7%  7%  [ 2 ]
Murray's 0%  0%  [ 0 ]
Mobil 1 13%  13%  [ 4 ]
Total votes : 30
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 Post subject: What brand fluid do you use for your Diff's and transfercase
PostPosted: Sat Jan 17, 2009 2:24 pm 
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Just wanted to get a feeling for what everyone is using. 8)

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PostPosted: Sat Jan 17, 2009 2:32 pm 
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those use different fluids you know, I use Royal Purple in my diffs and Valvoline in my t-case, both full synthetic. your t-case needs ATF+4

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PostPosted: Sat Jan 17, 2009 5:02 pm 
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jsc7002 wrote:
those use different fluids you know, I use Royal Purple in my diffs and Valvoline in my t-case, both full synthetic. your t-case needs ATF+4


Really? I don't understand why? Is not gear lube gear lube? What differences are there to make the Tcase need atf+4? But thanks for the heads up!! To bad i allready bought 7 quarts of royal purple gear lube. Now i need some stf+4 also.

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PostPosted: Sat Jan 17, 2009 10:30 pm 
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Where's Mobil1?

I run Mobil1 75w-140 in my diffs,only use ATF+4 in the t-case like stated before.


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PostPosted: Sun Jan 18, 2009 3:51 am 
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tjkj2002 wrote:
Where's Mobil1?

I run Mobil1 75w-140 in my diffs,only use ATF+4 in the t-case like stated before.

I thought i added it as the last choice, but i see it is not included.

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PostPosted: Sun Jan 18, 2009 4:39 am 
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Back-n-Black wrote:
tjkj2002 wrote:
Where's Mobil1?

I run Mobil1 75w-140 in my diffs,only use ATF+4 in the t-case like stated before.

I thought i added it as the last choice, but i see it is not included.


really? :twisted:

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PostPosted: Sun Jan 18, 2009 12:23 pm 
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Here is which gear oils tested best for reference: http://www.amsoil.com/products/gearlube ... Paper.aspx

In order of quality based on test results:
Amsoil Severe Gear
Mobil 1 (about half as good as Amsoil)
Gm Syn
Castrol
Redline
Penzzoil
Valvoline

fwiw, RP was way down the list.

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PostPosted: Sun Jan 18, 2009 12:27 pm 
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I run Mobil 1 but only because every time I change any of my fluids I need it that day and forget to order my Amsoil stuff to have it here on time. Same thing just happened with my air filter. I keep forgetting.

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PostPosted: Sun Jan 18, 2009 9:55 pm 
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Hey, I use one of those viscosity testing machine on page 7...brookfield viscometer!
Go figure amsoil was tops when they were the ones asking for all the testing....... Just joking JJ
:roll: :lol: :D :D :D :mrgreen:

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PostPosted: Mon Jan 19, 2009 2:36 am 
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TAHOE wrote:
Hey, I use one of those viscosity testing machine on page 7...brookfield viscometer!
Go figure amsoil was tops when they were the ones asking for all the testing....... Just joking JJ
:roll: :lol: :D :D :D :mrgreen:


Agreed. The only info i take to heart on oil testing is ASE tests as they are just looking at all oils without bias!! Buyer be ware when a company shows study's to prove there products dominance and it was all paid for by the company. And don't say they don't lie cause they all do.

Just like Valvoline commercial about more NHRA cars use there oil..................ya cause Valvoline pays more than any other oil company in sponsorships to NHRA teams.....wow now that is a coincidence. :?

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NV242 Selec-Trac Full Time 4WD System
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PostPosted: Sat Dec 05, 2009 3:15 pm 
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Ok :o
I have an idea :idea:
Why don't you pay for the next independent study!
Of course you will not be able to publish it because we all now know you must have something to gain. :P

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PostPosted: Sat Dec 05, 2009 7:09 pm 
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Amsoil 75W110 in both diffs.

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PostPosted: Sat Dec 05, 2009 7:14 pm 
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Back-n-Black wrote:
Just like Valvoline commercial about more NHRA cars use there oil..................ya cause Valvoline pays more than any other oil company in sponsorships to NHRA teams.....wow now that is a coincidence. :?


Absolute truth. Until this past summer I had a partnership in a NHRA Outlaw / IHRA Pro Mod car. I'd say 75% of the cars running this class actually use Redline Oil. They were one of our sponsors which is why we used their stuff. Don't get me wrong, it's great racing oil but without sponsorship, I wouldn't hesitate to use Amsoil racing oil.

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