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#4439453 - 06/23/17 12:50 PM Mixing old Mobil 0w-40 with new version.
Crobinson16 Offline


Registered: 06/28/16
Posts: 63
Loc: PENNSYLVANIA
Anything​ mixing problems with mixing 2qt of old version European car formula Mobil Ow-40 with 5 qts, of new FS version. Typical oci are between
8,500 and 10,000 Miles . Thanks

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#4439473 - 06/23/17 01:10 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
It's fine.
_________________________
Mighty Mouse Tech
Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL

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#4439492 - 06/23/17 01:29 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
Coprolite Offline


Registered: 07/03/11
Posts: 1224
Loc: Houston, TX
IF your car blows up, you didn't hear that it was ok from us.....

It will be fine as long as the new Mobil still has the certifications required for your car. It doesn't for mine, so I am going straight to Castrol without one drop of M1 ever touching the car.

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#4439500 - 06/23/17 01:34 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
901Memphis Offline


Registered: 08/14/10
Posts: 12893
Loc: Northern Kentucky
Will be perfectly fine the oils are more than likely very similar.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4439552 - 06/23/17 02:13 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Coprolite]
Crobinson16 Offline


Registered: 06/28/16
Posts: 63
Loc: PENNSYLVANIA
Actually neither version has the " certification " my engine requires.
I guess my consern was if they are in fact different base blend's weither it GTL or Visiom? , forgive me for my lack of knowledge on oils, I was under the impression they may be totally different. And I didn't know if that would cause a mixing problem or something else down the road ,Im just not that informed as some.


Originally Posted By: Coprolite
IF your car blows up, you didn't hear that it was ok from us.....

It will be fine as long as the new Mobil still has the certifications required for your car. It doesn't for mine, so I am going straight to Castrol without one drop of M1 ever touching the car.

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#4439567 - 06/23/17 02:33 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
Ddubya Offline


Registered: 09/15/16
Posts: 51
Loc: DFW, TX
I've mixed 5 qts of the new M1 0W-40 with 2 qts of Pennzoil Platinum HM 5W-30 with no ill effects that I can tell (1 OCI only). Mixing Mobil 1 to Mobil 1 should be fine.


Edited by Ddubya (06/23/17 02:34 PM)
_________________________
2017 Volvo S60 Inscription (Castrol Edge Syn)
2010 Mazda 6i Touring (PP or Castrol Magnatec Syn)
2013 Ford Explorer V6 (company car) (Kendall Syn Blend)
2009 Caddy DTS (Castrol EP)

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#4439700 - 06/23/17 05:17 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
A little difference in viscosity (12.8 cSt in FS vs. 13.4-13.8 in the old stuff). Add packs minor differences. You'll be fine. For those that want to mix, this would be about an ideal situation....same brand syn. and grade.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

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#4440073 - 06/24/17 06:13 AM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
dlundblad Offline


Registered: 09/30/13
Posts: 10027
Loc: Indiana
I mixed the 2 in her Volvo. I wasn't going to waste 4 quarts on OPE or something. Lol.
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4440104 - 06/24/17 07:44 AM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
Coprolite Offline


Registered: 07/03/11
Posts: 1224
Loc: Houston, TX
Running an oil that doesn't carry the specifications required for your engine is more harmful than mixing two generations of the same oil. All motor oil is required to be able to be mixing with any other motor oil. This is how people can switch from one brand to another without full flushing out the oiling system on their car. Running an oil that doesn't have the right specifications can cause a shortened life for the engine. How long that may take to impact your engine will vary depending on what oil and what engine.

There are some interesting threads where people ran the wrong spec oil and got sludging and other threads where different oil was specified to protect bearings, etc. I haven't seen one that has resulted in instant seizing of the motor or explosion. However, if I do, I hope they include video and pictures.

You will probably be fine using the mixed oil. In the long run, get into the practice of putting the right specification oil into the engine, as this is a better practice.
Welcome and don't let people's bad humor or apparent abruptness keep you from asking your questions and satisfying your curiosity. I also suggest using Google to site search BITOG, as it works so much better than any built in search. This is often the case in many forums.

Cheers.
Originally Posted By: Crobinson16
Actually neither version has the " certification " my engine requires.
I guess my consern was if they are in fact different base blend's weither it GTL or Visiom? , forgive me for my lack of knowledge on oils, I was under the impression they may be totally different. And I didn't know if that would cause a mixing problem or something else down the road ,Im just not that informed as some.


Originally Posted By: Coprolite
IF your car blows up, you didn't hear that it was ok from us.....

It will be fine as long as the new Mobil still has the certifications required for your car. It doesn't for mine, so I am going straight to Castrol without one drop of M1 ever touching the car.

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#4440106 - 06/24/17 07:48 AM Re: Mixing old Mobil 0w-40 with new version. [Re: Coprolite]
4WD Offline


Registered: 09/21/10
Posts: 6369
Loc: Texas
OMG - you should tweet that ...

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#4441251 - 06/25/17 04:02 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
RoofTopPigeon Offline


Registered: 06/25/17
Posts: 2
Loc: MI
I Do KNOW for a FACT; That ALL of the American API (and) ILSAC Rated Oils ARE COMPATIBLE with Each other.
The Oil Producers (and) Manufactures EVEN "Test their products themselves" to ENSURE Compatibility with Other Brands!
HOWEVER; I can NOT Speak for European ACEA Oil's
Has I Know NOTHING about those.


Edited by RoofTopPigeon (06/25/17 04:09 PM)

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#4441298 - 06/25/17 05:17 PM Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon]
4WD Offline


Registered: 09/21/10
Posts: 6369
Loc: Texas
Try to be more assertive in your writing style ...

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#4441363 - 06/25/17 06:23 PM Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon]
Shannow Online   content


Registered: 12/12/02
Posts: 39858
Loc: 'Stralia
Originally Posted By: RoofTopPigeon
I Do KNOW for a FACT; That ALL of the American API (and) ILSAC Rated Oils ARE COMPATIBLE with Each other.
The Oil Producers (and) Manufactures EVEN "Test their products themselves" to ENSURE Compatibility with Other Brands!


Actually, they TEST them against 7 reference oils...

Here's what the testing is, and note that all it offers is that with the 7 reference oils it doesn't split, nor drop precipitates...doesn't promise or offer any more than that.

https://bobistheoilguy.com/forums/ubbthreads.php/topics/3503628/Re:_The_oft_quoted_ASTM_D6922

That being said, this is probably one of the safest mixes that you could imagine.

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#4441390 - 06/25/17 06:51 PM Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16]
Crobinson16 Offline


Registered: 06/28/16
Posts: 63
Loc: PENNSYLVANIA
?

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#4441429 - 06/25/17 07:44 PM Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon]
kschachn Offline


Registered: 12/26/05
Posts: 9395
Loc: Upper Midwest
Originally Posted By: RoofTopPigeon
I Do KNOW for a FACT; That ALL of the American API (and) ILSAC Rated Oils ARE COMPATIBLE with Each other.
The Oil Producers (and) Manufactures EVEN "Test their products themselves" to ENSURE Compatibility with Other Brands!
HOWEVER; I can NOT Speak for European ACEA Oil's
Has I Know NOTHING about those.

Do we know you under another, previous name? Sure seems like it.
_________________________
1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 394K
2000 Toyota ECHO, 267K

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