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Mixing old Mobil 0w-40 with new version. #4439453
06/23/17 12:50 PM
06/23/17 12:50 PM
Joined: Jun 2016
Posts: 74
PENNSYLVANIA
Crobinson16 Offline OP
Crobinson16  Offline OP
Joined: Jun 2016
Posts: 74
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

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4439473
06/23/17 01:10 PM
06/23/17 01:10 PM
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
It's fine.


Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4439492
06/23/17 01:29 PM
06/23/17 01:29 PM
Joined: Jul 2011
Posts: 1,224
Houston, TX
Coprolite Offline
Coprolite  Offline
Joined: Jul 2011
Posts: 1,224
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.

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4439500
06/23/17 01:34 PM
06/23/17 01:34 PM
Joined: Aug 2010
Posts: 12,903
Northern Kentucky
901Memphis Offline
901Memphis  Offline
Joined: Aug 2010
Posts: 12,903
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
Re: Mixing old Mobil 0w-40 with new version. [Re: Coprolite] #4439552
06/23/17 02:13 PM
06/23/17 02:13 PM
Joined: Jun 2016
Posts: 74
PENNSYLVANIA
Crobinson16 Offline OP
Crobinson16  Offline OP
Joined: Jun 2016
Posts: 74
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.

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4439567
06/23/17 02:33 PM
06/23/17 02:33 PM
Joined: Sep 2016
Posts: 53
DFW, TX
Ddubya Offline
Ddubya  Offline
Joined: Sep 2016
Posts: 53
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.

Last 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)
Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4439700
06/23/17 05:17 PM
06/23/17 05:17 PM
Joined: Sep 2015
Posts: 3,866
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,866
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
Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4440073
06/24/17 06:13 AM
06/24/17 06:13 AM
Joined: Sep 2013
Posts: 10,454
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,454
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 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4440104
06/24/17 07:44 AM
06/24/17 07:44 AM
Joined: Jul 2011
Posts: 1,224
Houston, TX
Coprolite Offline
Coprolite  Offline
Joined: Jul 2011
Posts: 1,224
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.

Re: Mixing old Mobil 0w-40 with new version. [Re: Coprolite] #4440106
06/24/17 07:48 AM
06/24/17 07:48 AM
Joined: Sep 2010
Posts: 7,001
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,001
Texas
OMG - you should tweet that ...

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4441251
06/25/17 04:02 PM
06/25/17 04:02 PM
Joined: Jun 2017
Posts: 2
MI
RoofTopPigeon Offline
RoofTopPigeon  Offline
Joined: Jun 2017
Posts: 2
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.

Last edited by RoofTopPigeon; 06/25/17 04:09 PM.
Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon] #4441298
06/25/17 05:17 PM
06/25/17 05:17 PM
Joined: Sep 2010
Posts: 7,001
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,001
Texas
Try to be more assertive in your writing style ...

Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon] #4441363
06/25/17 06:23 PM
06/25/17 06:23 PM
Joined: Dec 2002
Posts: 40,897
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 40,897
'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.

Re: Mixing old Mobil 0w-40 with new version. [Re: Crobinson16] #4441390
06/25/17 06:51 PM
06/25/17 06:51 PM
Joined: Jun 2016
Posts: 74
PENNSYLVANIA
Crobinson16 Offline OP
Crobinson16  Offline OP
Joined: Jun 2016
Posts: 74
PENNSYLVANIA
?

Re: Mixing old Mobil 0w-40 with new version. [Re: RoofTopPigeon] #4441429
06/25/17 07:44 PM
06/25/17 07:44 PM
Joined: Dec 2005
Posts: 9,900
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 9,900
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, 228K
1996 Honda Accord, 263K
1999 Toyota Sienna, 400K
2000 Toyota ECHO, 271K
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