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#2733348 - 09/03/12 10:14 AM Can you mix Valvoline ATF and Castrol in Hyundai?
zerosoma Offline


Registered: 08/12/11
Posts: 2274
Loc: Omaha, NE
My santa fe will need an atf change before winter hits. I noticed castrol was on sale. I believe valvoline is in there from the last time the owner before me changed it.

will they mix?
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2004 Hyundai Santa Fe LX 3.5L V6 (125k) [Valvoline Max Life Next Gen 5w30]

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#2733377 - 09/03/12 10:39 AM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: zerosoma]
MolaKule Offline


Registered: 06/05/02
Posts: 17332
Loc: Iowegia - USA
I have yet to see any ATF or PCMO NOT mix (chemically).


Edited by MolaKule (09/03/12 10:54 AM)
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#2733382 - 09/03/12 10:41 AM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: zerosoma]
zerosoma Offline


Registered: 08/12/11
Posts: 2274
Loc: Omaha, NE
i've just heard so many stories of the wrong atf being mixed in, and the trans being ruined. is this just scare tactic or is this true?
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2004 Hyundai Santa Fe LX 3.5L V6 (125k) [Valvoline Max Life Next Gen 5w30]

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#2733390 - 09/03/12 10:52 AM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: zerosoma]
MolaKule Offline


Registered: 06/05/02
Posts: 17332
Loc: Iowegia - USA
Check the product labelling and Product Specification Document for vehicle application coverage.

I think what most people mean is that not all ATF fluids cover all vehicles, and that is true.

For example, you would not want to use a Chrysler spec ATF+4 in a Kia. However, they will all MIX chemically, but that does not mean that ATF+4 should be used in a Kia's tranny.
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#2733397 - 09/03/12 10:56 AM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: zerosoma]
MolaKule Offline


Registered: 06/05/02
Posts: 17332
Loc: Iowegia - USA
I have heard via testimony that the import versions of Castrol and Valvoline multi-vehicle fluids do work.
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#2733409 - 09/03/12 11:06 AM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: MolaKule]
JC1 Offline


Registered: 11/29/08
Posts: 1501
Loc: Oshawa, Ontario Canada
It would probably work if you mixed them. Is the Castrol rated for SP-3?
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#2733704 - 09/03/12 05:33 PM Re: Can you mix Valvoline ATF and Castrol in Hyundai? [Re: zerosoma]
JTK Offline


Registered: 08/14/03
Posts: 8713
Loc: Buffalo, NY
Originally Posted By: zerosoma
My santa fe will need an atf change before winter hits. I noticed castrol was on sale. I believe valvoline is in there from the last time the owner before me changed it.

will they mix?


Having owned a 2008 Santa Fe and been involved over at HyundaiForums for some time, I can tell you both Castol Multi-Import and Valvoline Maxlife ATF both work perfectly in the Hyundai F4A51 trans that you have. I've never read where mixing them is an issue. Any ATF recommended for use where Hyundai/Kia SPIII is specd can be mixed.

Any time you do an initial drain/fill, you're mixing ATFs. It's not a problem provided it's spec'd for your vehicle.

Joel
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2016 Subaru Forester 2.5, CVT. 2013 Dodge Grand Caravan SE (Babe magnet III)

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